Add required properties to schema

[aai/aai-common.git] / aai-schema / src / main / resources / onap / aai_schema / aai_schema_v12.xsd

diff --git a/aai-schema/src/main/resources/onap/aai_schema/aai_schema_v12.xsd b/aai-schema/src/main/resources/onap/aai_schema/aai_schema_v12.xsd
index 5e9dcf7..bacc1ca 100644 (file)
--- a/aai-schema/src/main/resources/onap/aai_schema/aai_schema_v12.xsd
+++ b/aai-schema/src/main/resources/onap/aai_schema/aai_schema_v12.xsd
@@ -113,14 +113,14 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="relationship-key" type="xs:string">
+        <xs:element name="relationship-key" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="A keyword provided by A&amp;AI to indicate an attribute.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="relationship-value" type="xs:string">
+        <xs:element name="relationship-value" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Value of the attribute.")</annox:annotate>
@@ -200,25 +200,25 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="OAM network, to be deprecated shortly.  Do not use for new purposes. ",nameProps="network-name",indexedProps="cvlan-tag,network-uuid,network-name",dependentOn="cloud-region",container="oam-networks",uriTemplate="/oam-networks/oam-network/{network-uuid}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="OAM network, to be deprecated shortly.  Do not use for new purposes. ",nameProps="network-name",indexedProps="cvlan-tag,network-uuid,network-name",dependentOn="cloud-region",container="oam-networks",uriTemplate="/oam-networks/oam-network/{network-uuid}",requiredProps="network-uuid,network-name,cvlan-tag")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="network-uuid" type="xs:string">
+        <xs:element name="network-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="UUID of the network. Unique across a cloud-region")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="network-name" type="xs:string">
+        <xs:element name="network-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Name of the network.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="cvlan-tag" type="xs:unsignedInt">
+        <xs:element name="cvlan-tag" type="xs:unsignedInt" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="cvlan-id")</annox:annotate>
@@ -266,18 +266,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Digital virtual switch metadata, used by SDN-C to configure VCEs.  A&amp;AI needs to receive this data from the PO deployment team and administer it using the provisioningTool.sh into A&amp;AI. ",indexedProps="vcenter-url,switch-name",dependentOn="cloud-region",container="dvs-switches",uriTemplate="/dvs-switches/dvs-switch/{switch-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Digital virtual switch metadata, used by SDN-C to configure VCEs.  A&amp;AI needs to receive this data from the PO deployment team and administer it using the provisioningTool.sh into A&amp;AI. ",indexedProps="vcenter-url,switch-name",dependentOn="cloud-region",container="dvs-switches",uriTemplate="/dvs-switches/dvs-switch/{switch-name}",requiredProps="switch-name,vcenter-url")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="switch-name" type="xs:string">
+        <xs:element name="switch-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="DVS switch name")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="vcenter-url" type="xs:string">
+        <xs:element name="vcenter-url" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="URL used to reach the vcenter")</annox:annotate>
@@ -311,18 +311,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Availability zone, a collection of compute hosts/pservers",indexedProps="availability-zone-name",dependentOn="cloud-region",container="availability-zones",uriTemplate="/availability-zones/availability-zone/{availability-zone-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Availability zone, a collection of compute hosts/pservers",indexedProps="availability-zone-name",dependentOn="cloud-region",container="availability-zones",uriTemplate="/availability-zones/availability-zone/{availability-zone-name}",requiredProps="availability-zone-name,hypervisor-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="availability-zone-name" type="xs:string">
+        <xs:element name="availability-zone-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Name of the availability zone.  Unique across a cloud region")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="hypervisor-type" type="xs:string">
+        <xs:element name="hypervisor-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Type of hypervisor.  Source of truth should define valid values.")</annox:annotate>
@@ -401,11 +401,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Serves a PATCH like function.  Does not enforce concurrency control.  Clear each usage with AAI team.")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Serves a PATCH like function.  Does not enforce concurrency control.  Clear each usage with AAI team.",requiredProps="update-node-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="update-node-type" type="xs:string"/>
+        <xs:element name="update-node-type" type="xs:string" minOccurs="0"/>
         <xs:element ref="tns:update-node-key" minOccurs="0" maxOccurs="5000"/>
         <xs:element name="update-node-uri" type="xs:string" minOccurs="0"/>
         <xs:element ref="tns:action" minOccurs="0" maxOccurs="5000"/>
@@ -423,7 +423,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
   <xs:element name="notify">
     <xs:complexType>
       <xs:sequence>
-        <xs:element name="event-id" type="xs:string"/>
+        <xs:element name="event-id" type="xs:string" minOccurs="0"/>
         <xs:element name="node-type" type="xs:string" minOccurs="0"/>
         <xs:element name="event-trigger" type="xs:string" minOccurs="0"/>
         <xs:element ref="tns:key-data" minOccurs="0" maxOccurs="5000"/>
@@ -448,25 +448,25 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="A collection of C tags (vlan tags) grouped for a specific purpose.",indexedProps="availability-zone-name",dependentOn="complex",container="ctag-pools",uriTemplate="/ctag-pools/ctag-pool/{target-pe}/{availability-zone-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="A collection of C tags (vlan tags) grouped for a specific purpose.",indexedProps="availability-zone-name",dependentOn="complex",container="ctag-pools",uriTemplate="/ctag-pools/ctag-pool/{target-pe}/{availability-zone-name}",requiredProps="target-pe,availability-zone-name,ctag-pool-purpose")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="target-pe" type="xs:string">
+        <xs:element name="target-pe" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="The Target provider edge router")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="availability-zone-name" type="xs:string">
+        <xs:element name="availability-zone-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Name of the availability zone")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="ctag-pool-purpose" type="xs:string">
+        <xs:element name="ctag-pool-purpose" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Describes what the intended purpose of this pool is.")</annox:annotate>
@@ -502,11 +502,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Collection of physical locations that can house cloud-regions.",indexedProps="identity-url,data-center-code,complex-name,physical-location-id",searchable="physical-location-id,data-center-code,complex-name,street1,street2,postal-code",uniqueProps="physical-location-id",container="complexes",namespace="cloud-infrastructure",uriTemplate="/cloud-infrastructure/complexes/complex/{physical-location-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Collection of physical locations that can house cloud-regions.",indexedProps="identity-url,data-center-code,complex-name,physical-location-id",searchable="physical-location-id,data-center-code,complex-name,street1,street2,postal-code",uniqueProps="physical-location-id",container="complexes",namespace="cloud-infrastructure",uriTemplate="/cloud-infrastructure/complexes/complex/{physical-location-id}",requiredProps="physical-location-id,physical-location-type,street1,city,postal-code,country,region")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="physical-location-id" type="xs:string">
+        <xs:element name="physical-location-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique identifier for physical location, e.g., CLLI")</annox:annotate>
@@ -541,20 +541,20 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="physical-location-type" type="xs:string">
+        <xs:element name="physical-location-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Type, e.g., central office, data center.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="street1" type="xs:string"/>
+        <xs:element name="street1" type="xs:string" minOccurs="0"/>
         <xs:element name="street2" type="xs:string" minOccurs="0"/>
-        <xs:element name="city" type="xs:string"/>
+        <xs:element name="city" type="xs:string" minOccurs="0"/>
         <xs:element name="state" type="xs:string" minOccurs="0"/>
-        <xs:element name="postal-code" type="xs:string"/>
-        <xs:element name="country" type="xs:string"/>
-        <xs:element name="region" type="xs:string"/>
+        <xs:element name="postal-code" type="xs:string" minOccurs="0"/>
+        <xs:element name="country" type="xs:string" minOccurs="0"/>
+        <xs:element name="region" type="xs:string" minOccurs="0"/>
         <xs:element name="latitude" type="xs:string" minOccurs="0"/>
         <xs:element name="longitude" type="xs:string" minOccurs="0"/>
         <xs:element name="elevation" type="xs:string" minOccurs="0"/>
@@ -580,11 +580,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Persistent block-level storage.",indexedProps="volume-group-name,vnf-type,heat-stack-id,volume-group-id",searchable="volume-group-id,volume-group-name",dependentOn="cloud-region",container="volume-groups",uriTemplate="/volume-groups/volume-group/{volume-group-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Persistent block-level storage.",indexedProps="volume-group-name,vnf-type,heat-stack-id,volume-group-id",searchable="volume-group-id,volume-group-name",dependentOn="cloud-region",container="volume-groups",uriTemplate="/volume-groups/volume-group/{volume-group-id}",requiredProps="volume-group-id,vnf-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="volume-group-id" type="xs:string">
+        <xs:element name="volume-group-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of volume-group.")</annox:annotate>
@@ -605,7 +605,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="vnf-type" type="xs:string">
+        <xs:element name="vnf-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="String capturing type of vnf, that was intended to identify the ASDC resource.  This field has been overloaded in service-specific ways and clients should expect changes to occur in the future to this field as ECOMP matures.")</annox:annotate>
@@ -660,18 +660,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Ephemeral Block storage volume.",indexedProps="volume-id",dependentOn="vserver",container="volumes",uriTemplate="/volumes/volume/{volume-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Ephemeral Block storage volume.",indexedProps="volume-id",dependentOn="vserver",container="volumes",uriTemplate="/volumes/volume/{volume-id}",requiredProps="volume-id,volume-selflink")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="volume-id" type="xs:string">
+        <xs:element name="volume-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of block storage volume relative to the vserver.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="volume-selflink" type="xs:string">
+        <xs:element name="volume-selflink" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="URL to endpoint where AAI can get more details")</annox:annotate>
@@ -705,11 +705,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="IPv4 Address Range",indexedProps="l3-interface-ipv4-address,vlan-id-inner,neutron-network-id,neutron-subnet-id",dependentOn="vlan,l-interface,vnfc",uriTemplate="/l3-interface-ipv4-address-list/{l3-interface-ipv4-address}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="IPv4 Address Range",indexedProps="l3-interface-ipv4-address,vlan-id-inner,neutron-network-id,neutron-subnet-id",dependentOn="vlan,l-interface,vnfc",uriTemplate="/l3-interface-ipv4-address-list/{l3-interface-ipv4-address}",requiredProps="l3-interface-ipv4-address")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="l3-interface-ipv4-address" type="xs:string">
+        <xs:element name="l3-interface-ipv4-address" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="IP address")</annox:annotate>
@@ -773,11 +773,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="IPv6 Address Range",indexedProps="l3-interface-ipv6-address,vlan-id-inner,neutron-network-id,neutron-subnet-id",dependentOn="vlan,l-interface,vnfc",uriTemplate="/l3-interface-ipv6-address-list/{l3-interface-ipv6-address}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="IPv6 Address Range",indexedProps="l3-interface-ipv6-address,vlan-id-inner,neutron-network-id,neutron-subnet-id",dependentOn="vlan,l-interface,vnfc",uriTemplate="/l3-interface-ipv6-address-list/{l3-interface-ipv6-address}",requiredProps="l3-interface-ipv6-address")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="l3-interface-ipv6-address" type="xs:string">
+        <xs:element name="l3-interface-ipv6-address" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="IP address")</annox:annotate>
@@ -841,11 +841,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Definition of vlan",indexedProps="vlan-interface,vlan-id-inner,vpn-key",dependentOn="l-interface",container="vlans",uriTemplate="/vlans/vlan/{vlan-interface}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Definition of vlan",indexedProps="vlan-interface,vlan-id-inner,vpn-key",dependentOn="l-interface",container="vlans",uriTemplate="/vlans/vlan/{vlan-interface}",requiredProps="vlan-interface,in-maint,is-ip-unnumbered")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vlan-interface" type="xs:string">
+        <xs:element name="vlan-interface" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="String that identifies the interface")</annox:annotate>
@@ -953,11 +953,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="SR-IOV Virtual Function (not to be confused with virtual network function)",indexedProps="pci-id,vf-vlan-filter,vf-mac-filter,vf-vlan-strip,neutron-network-id",dependentOn="l-interface",container="sriov-vfs",uriTemplate="/sriov-vfs/sriov-vf/{pci-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="SR-IOV Virtual Function (not to be confused with virtual network function)",indexedProps="pci-id,vf-vlan-filter,vf-mac-filter,vf-vlan-strip,neutron-network-id",dependentOn="l-interface",container="sriov-vfs",uriTemplate="/sriov-vfs/sriov-vf/{pci-id}",requiredProps="pci-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="pci-id" type="xs:string">
+        <xs:element name="pci-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="PCI ID used to identify the sriov-vf")</annox:annotate>
@@ -1075,11 +1075,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Logical interfaces, e.g., a vnic.",indexedProps="macaddr,interface-id,interface-name,network-name",dependentOn="generic-vnf,newvce,p-interface,vserver,lag-interface,l-interface",container="l-interfaces",uriTemplate="/l-interfaces/l-interface/{interface-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Logical interfaces, e.g., a vnic.",indexedProps="macaddr,interface-id,interface-name,network-name",dependentOn="generic-vnf,newvce,p-interface,vserver,lag-interface,l-interface",container="l-interfaces",uriTemplate="/l-interfaces/l-interface/{interface-name}",requiredProps="interface-name,is-port-mirrored,in-maint,is-ip-unnumbered")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="interface-name" type="xs:string">
+        <xs:element name="interface-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Name given to the interface")</annox:annotate>
@@ -1209,18 +1209,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Virtual Servers, aka virtual machine or VM.",nameProps="vserver-name",indexedProps="is-closed-loop-disabled,prov-status,vserver-name,vserver-id,in-maint,vserver-name2",searchable="vserver-id,vserver-name,vserver-name2",dependentOn="tenant",container="vservers",uriTemplate="/vservers/vserver/{vserver-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Virtual Servers, aka virtual machine or VM.",nameProps="vserver-name",indexedProps="is-closed-loop-disabled,prov-status,vserver-name,vserver-id,in-maint,vserver-name2",searchable="vserver-id,vserver-name,vserver-name2",dependentOn="tenant",container="vservers",uriTemplate="/vservers/vserver/{vserver-id}",requiredProps="vserver-id,vserver-name,vserver-selflink,in-maint,is-closed-loop-disabled")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vserver-id" type="xs:string">
+        <xs:element name="vserver-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique identifier for this vserver relative to its tenant")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="vserver-name" type="xs:string">
+        <xs:element name="vserver-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Name of vserver")</annox:annotate>
@@ -1241,7 +1241,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="vserver-selflink" type="xs:string">
+        <xs:element name="vserver-selflink" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="URL to endpoint where AAI can get more details")</annox:annotate>
@@ -1291,18 +1291,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack tenant",nameProps="tenant-name",indexedProps="tenant-name,tenant-id,tenant-context",searchable="tenant-id,tenant-name",dependentOn="cloud-region",container="tenants",uriTemplate="/tenants/tenant/{tenant-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack tenant",nameProps="tenant-name",indexedProps="tenant-name,tenant-id,tenant-context",searchable="tenant-id,tenant-name",dependentOn="cloud-region",container="tenants",uriTemplate="/tenants/tenant/{tenant-id}",requiredProps="tenant-id,tenant-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="tenant-id" type="xs:string">
+        <xs:element name="tenant-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique id relative to the cloud-region.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="tenant-name" type="xs:string">
+        <xs:element name="tenant-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Readable name of tenant")</annox:annotate>
@@ -1344,11 +1344,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="HPA Capability Feature attributes",indexedProps="hpa-attribute-key",dependentOn="hpa-capability")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="HPA Capability Feature attributes",indexedProps="hpa-attribute-key",dependentOn="hpa-capability",requiredProps="hpa-attribute-key")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="hpa-attribute-key" type="xs:string">
+        <xs:element name="hpa-attribute-key" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="name of the specific HPA attribute")</annox:annotate>
@@ -1377,18 +1377,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Represents a HPA capability",indexedProps="hpa-feature,architecture,hpa-capability-id",dependentOn="flavor,cloud-region",container="hpa-capabilities")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Represents a HPA capability",indexedProps="hpa-feature,architecture,hpa-capability-id",dependentOn="flavor,cloud-region",container="hpa-capabilities",requiredProps="hpa-capability-id,hpa-feature")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="hpa-capability-id" type="xs:string">
+        <xs:element name="hpa-capability-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="UUID to uniquely identify a HPA capability")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="hpa-feature" type="xs:string">
+        <xs:element name="hpa-feature" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Name of the HPACapability")</annox:annotate>
@@ -1437,18 +1437,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack flavor.",nameProps="flavor-name",indexedProps="flavor-name,flavor-id",dependentOn="cloud-region",container="flavors",uriTemplate="/flavors/flavor/{flavor-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack flavor.",nameProps="flavor-name",indexedProps="flavor-name,flavor-id",dependentOn="cloud-region",container="flavors",uriTemplate="/flavors/flavor/{flavor-id}",requiredProps="flavor-id,flavor-name,flavor-selflink")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="flavor-id" type="xs:string">
+        <xs:element name="flavor-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Flavor id, expected to be unique across cloud-region.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="flavor-name" type="xs:string">
+        <xs:element name="flavor-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Flavor name")</annox:annotate>
@@ -1497,7 +1497,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="flavor-selflink" type="xs:string">
+        <xs:element name="flavor-selflink" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="URL to endpoint where AAI can get more details")</annox:annotate>
@@ -1545,25 +1545,25 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack group-assignment used to store exclusivity groups (EG).",nameProps="group-name",indexedProps="group-id,group-type,group-name",searchable="group-id,group-name",dependentOn="cloud-region",container="group-assignments",uriTemplate="/group-assignments/group-assignment/{group-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack group-assignment used to store exclusivity groups (EG).",nameProps="group-name",indexedProps="group-id,group-type,group-name",searchable="group-id,group-name",dependentOn="cloud-region",container="group-assignments",uriTemplate="/group-assignments/group-assignment/{group-id}",requiredProps="group-id,group-type,group-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="group-id" type="xs:string">
+        <xs:element name="group-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Group id, expected to be unique across cloud-region.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="group-type" type="xs:string">
+        <xs:element name="group-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Group type - the type of group this instance refers to")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="group-name" type="xs:string">
+        <xs:element name="group-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Group name - name assigned to the group")</annox:annotate>
@@ -1604,11 +1604,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack snapshot",nameProps="snapshot-name",uniqueProps="snapshot-id",indexedProps="application,snapshot-name,application-vendor,snapshot-id,application-version,prev-snapshot-id",dependentOn="cloud-region",container="snapshots",uriTemplate="/snapshots/snapshot/{snapshot-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack snapshot",nameProps="snapshot-name",uniqueProps="snapshot-id",indexedProps="application,snapshot-name,application-vendor,snapshot-id,application-version,prev-snapshot-id",dependentOn="cloud-region",container="snapshots",uriTemplate="/snapshots/snapshot/{snapshot-id}",requiredProps="snapshot-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="snapshot-id" type="xs:string">
+        <xs:element name="snapshot-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Snapshot id, this is the key UUID assoc associated in glance with the snapshots.")</annox:annotate>
@@ -1705,18 +1705,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Key/value pairs",indexedProps="metaname",dependentOn="tenant,image,service-instance,connector,model",container="metadata",uriTemplate="/metadata/metadatum/{metaname}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Key/value pairs",indexedProps="metaname",dependentOn="tenant,image,service-instance,connector,model",container="metadata",uriTemplate="/metadata/metadatum/{metaname}",requiredProps="metaname,metaval")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="metaname" type="xs:string">
+        <xs:element name="metaname" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true)</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="metaval" type="xs:string"/>
+        <xs:element name="metaval" type="xs:string" minOccurs="0"/>
         <xs:element name="resource-version" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
@@ -1743,18 +1743,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack image.",nameProps="image-name",indexedProps="application,image-name,application-vendor,image-id,application-version",dependentOn="cloud-region",container="images",uriTemplate="/images/image/{image-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack image.",nameProps="image-name",indexedProps="application,image-name,application-vendor,image-id,application-version",dependentOn="cloud-region",container="images",uriTemplate="/images/image/{image-id}",requiredProps="image-id,image-name,image-os-distro,image-os-version,image-selflink")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="image-id" type="xs:string">
+        <xs:element name="image-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Image id, expected to be unique across cloud region")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="image-name" type="xs:string">
+        <xs:element name="image-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Image name")</annox:annotate>
@@ -1768,14 +1768,14 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="image-os-distro" type="xs:string">
+        <xs:element name="image-os-distro" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="The common name of the operating system distribution in lowercase")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="image-os-version" type="xs:string">
+        <xs:element name="image-os-version" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="The operating system version as specified by the distributor.")</annox:annotate>
@@ -1803,7 +1803,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="image-selflink" type="xs:string">
+        <xs:element name="image-selflink" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="URL to endpoint where AAI can get more details")</annox:annotate>
@@ -1850,11 +1850,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="IPv4 Address Range",indexedProps="vip-ipv4-address,vlan-id-inner,neutron-network-id,neutron-subnet-id",dependentOn="cloud-region",uriTemplate="/vip-ipv4-address-list/{vip-ipv4-address}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="IPv4 Address Range",indexedProps="vip-ipv4-address,vlan-id-inner,neutron-network-id,neutron-subnet-id",dependentOn="cloud-region",uriTemplate="/vip-ipv4-address-list/{vip-ipv4-address}",requiredProps="vip-ipv4-address")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vip-ipv4-address" type="xs:string">
+        <xs:element name="vip-ipv4-address" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="IP address")</annox:annotate>
@@ -1918,11 +1918,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="IPv6 Address Range",indexedProps="vip-ipv6-address,vlan-id-inner,neutron-network-id,neutron-subnet-id",dependentOn="cloud-region",uriTemplate="/vip-ipv6-address-list/{vip-ipv6-address}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="IPv6 Address Range",indexedProps="vip-ipv6-address,vlan-id-inner,neutron-network-id,neutron-subnet-id",dependentOn="cloud-region",uriTemplate="/vip-ipv6-address-list/{vip-ipv6-address}",requiredProps="vip-ipv6-address")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vip-ipv6-address" type="xs:string">
+        <xs:element name="vip-ipv6-address" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="IP address")</annox:annotate>
@@ -1986,11 +1986,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Persist common address information of external systems.",indexedProps="esr-system-info-id,system-name,system-type",searchable="esr-system-info-id,system-name,system-type",container="esr-system-info-list",dependentOn="cloud-region,esr-ems,esr-vnfm,esr-thirdparty-sdnc")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Persist common address information of external systems.",indexedProps="esr-system-info-id,system-name,system-type",searchable="esr-system-info-id,system-name,system-type",container="esr-system-info-list",dependentOn="cloud-region,esr-ems,esr-vnfm,esr-thirdparty-sdnc",requiredProps="esr-system-info-id,user-name,password,system-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="esr-system-info-id" type="xs:string">
+        <xs:element name="esr-system-info-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of esr system info.")</annox:annotate>
@@ -2032,21 +2032,21 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="user-name" type="xs:string">
+        <xs:element name="user-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="username used to access external systems.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="password" type="xs:string">
+        <xs:element name="password" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="password used to access external systems.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="system-type" type="xs:string">
+        <xs:element name="system-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="it could be vim/vnfm/thirdparty-sdnc/ems-resource/ems-performance/ems-alarm.")</annox:annotate>
@@ -2150,18 +2150,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="cloud-region designates an installation of a cloud cluster or region or instantiation.",indexedProps="cloud-owner,cloud-region-id,cloud-type,owner-defined-type",nameProps="owner-defined-type",container="cloud-regions",namespace="cloud-infrastructure",uriTemplate="/cloud-infrastructure/cloud-regions/cloud-region/{cloud-owner}/{cloud-region-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="cloud-region designates an installation of a cloud cluster or region or instantiation.",indexedProps="cloud-owner,cloud-region-id,cloud-type,owner-defined-type",nameProps="owner-defined-type",container="cloud-regions",namespace="cloud-infrastructure",uriTemplate="/cloud-infrastructure/cloud-regions/cloud-region/{cloud-owner}/{cloud-region-id}",requiredProps="cloud-owner,cloud-region-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="cloud-owner" type="xs:string">
+        <xs:element name="cloud-owner" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Identifies the vendor and cloud name. First part of composite key should be formatted as vendor-cloudname")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="cloud-region-id" type="xs:string">
+        <xs:element name="cloud-region-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Identifier used by the vendor for the region. Second part of composite key")</annox:annotate>
@@ -2277,11 +2277,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Network profile populated by SDN-GP for SNMP",indexedProps="nm-profile-name",container="network-profiles",namespace="cloud-infrastructure",uriTemplate="/cloud-infrastructure/network-profiles/network-profile/{nm-profile-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Network profile populated by SDN-GP for SNMP",indexedProps="nm-profile-name",container="network-profiles",namespace="cloud-infrastructure",uriTemplate="/cloud-infrastructure/network-profiles/network-profile/{nm-profile-name}",requiredProps="nm-profile-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="nm-profile-name" type="xs:string">
+        <xs:element name="nm-profile-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique name of network profile.")</annox:annotate>
@@ -2322,11 +2322,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="SR-IOV Physical Function",indexedProps="pf-pci-id",dependentOn="p-interface",container="sriov-pfs",uriTemplate="/sriov-pfs/sriov-pf/{pf-pci-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="SR-IOV Physical Function",indexedProps="pf-pci-id",dependentOn="p-interface",container="sriov-pfs",uriTemplate="/sriov-pfs/sriov-pf/{pf-pci-id}",requiredProps="pf-pci-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="pf-pci-id" type="xs:string">
+        <xs:element name="pf-pci-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Identifier for the sriov-pf")</annox:annotate>
@@ -2360,11 +2360,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Physical interface (e.g., nic)",indexedProps="interface-name,prov-status",nameProps="prov-status",dependentOn="vpls-pe,pserver,pnf",container="p-interfaces",uriTemplate="/p-interfaces/p-interface/{interface-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Physical interface (e.g., nic)",indexedProps="interface-name,prov-status",nameProps="prov-status",dependentOn="vpls-pe,pserver,pnf",container="p-interfaces",uriTemplate="/p-interfaces/p-interface/{interface-name}",requiredProps="interface-name,in-maint")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="interface-name" type="xs:string">
+        <xs:element name="interface-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Name that identifies the physical interface")</annox:annotate>
@@ -2477,11 +2477,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Link aggregate interface",indexedProps="interface-name,interface-id,interface-role",dependentOn="generic-vnf,pserver,vpls-pe,pnf",container="lag-interfaces",uriTemplate="/lag-interfaces/lag-interface/{interface-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Link aggregate interface",indexedProps="interface-name,interface-id,interface-role",dependentOn="generic-vnf,pserver,vpls-pe,pnf",container="lag-interfaces",uriTemplate="/lag-interfaces/lag-interface/{interface-name}",requiredProps="interface-name,in-maint")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="interface-name" type="xs:string">
+        <xs:element name="interface-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Name that identifies the link aggregate interface")</annox:annotate>
@@ -2565,11 +2565,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Compute host whose hostname must be unique and must exactly match what is sent as a relationship to a vserver.",nameProps="pserver-name2",indexedProps="hostname,in-maint,pserver-id,pserver-name2,inv-status",searchable="hostname,pserver-name2,pserver-id,ipv4-oam-address",uniqueProps="hostname",container="pservers",namespace="cloud-infrastructure",uriTemplate="/cloud-infrastructure/pservers/pserver/{hostname}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Compute host whose hostname must be unique and must exactly match what is sent as a relationship to a vserver.",nameProps="pserver-name2",indexedProps="hostname,in-maint,pserver-id,pserver-name2,inv-status",searchable="hostname,pserver-name2,pserver-id,ipv4-oam-address",uniqueProps="hostname",container="pservers",namespace="cloud-infrastructure",uriTemplate="/cloud-infrastructure/pservers/pserver/{hostname}",requiredProps="hostname,in-maint")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="hostname" type="xs:string">
+        <xs:element name="hostname" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Value from executing hostname on the compute node.")</annox:annotate>
@@ -2780,18 +2780,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Virtual organization of cloud infrastructure elements in a data center context",nameProps="vdc-name",indexedProps="vdc-name,vdc-id",container="virtual-data-centers",namespace="cloud-infrastructure",uriTemplate="/cloud-infrastructure/virtual-data-centers/virtual-data-center/{vdc-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Virtual organization of cloud infrastructure elements in a data center context",nameProps="vdc-name",indexedProps="vdc-name,vdc-id",container="virtual-data-centers",namespace="cloud-infrastructure",uriTemplate="/cloud-infrastructure/virtual-data-centers/virtual-data-center/{vdc-id}",requiredProps="vdc-id,vdc-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vdc-id" type="xs:string">
+        <xs:element name="vdc-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of the vdc")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="vdc-name" type="xs:string">
+        <xs:element name="vdc-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Name of the virtual data center")</annox:annotate>
@@ -2825,46 +2825,46 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="It is a logical partition of the cloud which allows to have multiple environments in the production AIC.",indexedProps="operational-environment-id",nameProps="operational-environment-name",uniqueProps="operational-environment-id",container="operational-environments",namespace="cloud-infrastructure",uriTemplate="/cloud-infrastructure/operational-environments/operational-environment/{operational-environment-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="It is a logical partition of the cloud which allows to have multiple environments in the production AIC.",indexedProps="operational-environment-id",nameProps="operational-environment-name",uniqueProps="operational-environment-id",container="operational-environments",namespace="cloud-infrastructure",uriTemplate="/cloud-infrastructure/operational-environments/operational-environment/{operational-environment-id}",requiredProps="operational-environment-id,operational-environment-name,operational-environment-type,operational-environment-status,tenant-context,workload-context")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="operational-environment-id" type="xs:string">
+        <xs:element name="operational-environment-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="UUID of an operational environment")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="operational-environment-name" type="xs:string">
+        <xs:element name="operational-environment-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Operational Environment name")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="operational-environment-type" type="xs:string">
+        <xs:element name="operational-environment-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Operational Environment Type.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="operational-environment-status" type="xs:string">
+        <xs:element name="operational-environment-status" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Status")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="tenant-context" type="xs:string">
+        <xs:element name="tenant-context" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Tenant Context.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="workload-context" type="xs:string">
+        <xs:element name="workload-context" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Workload Context.")</annox:annotate>
@@ -2915,11 +2915,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Persist EMS address information used by EMS driver.",indexedProps="ems-id",searchable="ems-id",container="esr-ems-list",namespace="external-system")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Persist EMS address information used by EMS driver.",indexedProps="ems-id",searchable="ems-id",container="esr-ems-list",namespace="external-system",requiredProps="ems-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="ems-id" type="xs:string">
+        <xs:element name="ems-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of EMS.")</annox:annotate>
@@ -2954,11 +2954,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Persist VNFM address information used by VF-C.",indexedProps="vnfm-id",searchable="vnfm-id",container="esr-vnfm-list",namespace="external-system")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Persist VNFM address information used by VF-C.",indexedProps="vnfm-id",searchable="vnfm-id",container="esr-vnfm-list",namespace="external-system",requiredProps="vnfm-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vnfm-id" type="xs:string">
+        <xs:element name="vnfm-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of VNFM.")</annox:annotate>
@@ -3007,11 +3007,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Persist SDNC address information used by ONAP SDNC.",indexedProps="sdnc-id",searchable="sdnc-id",container="esr-thirdparty-sdnc-list",namespace="external-system")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Persist SDNC address information used by ONAP SDNC.",indexedProps="sdnc-id",searchable="sdnc-id",container="esr-thirdparty-sdnc-list",namespace="external-system",requiredProps="thirdparty-sdnc-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="thirdparty-sdnc-id" type="xs:string">
+        <xs:element name="thirdparty-sdnc-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of SDNC.")</annox:annotate>
@@ -3074,11 +3074,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Collection of resource instances used to connect a variety of disparate inventory widgets",indexedProps="resource-instance-id,model-invariant-id,model-version-id,widget-model-id,widget-model-version",container="connectors",namespace="business",uriTemplate="/business/connectors/connector/{resource-instance-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Collection of resource instances used to connect a variety of disparate inventory widgets",indexedProps="resource-instance-id,model-invariant-id,model-version-id,widget-model-id,widget-model-version",container="connectors",namespace="business",uriTemplate="/business/connectors/connector/{resource-instance-id}",requiredProps="resource-instance-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="resource-instance-id" type="xs:string">
+        <xs:element name="resource-instance-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique id of resource instance.")</annox:annotate>
@@ -3148,11 +3148,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Represents the specifics of a tunnel cross connect piece of a resource that gets separately allotted",uniqueProps="id",indexedProps="id",dependentOn="allotted-resource",container="tunnel-xconnects",uriTemplate="/tunnel-xconnects/tunnel-xconnect/{id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Represents the specifics of a tunnel cross connect piece of a resource that gets separately allotted",uniqueProps="id",indexedProps="id",dependentOn="allotted-resource",container="tunnel-xconnects",uriTemplate="/tunnel-xconnects/tunnel-xconnect/{id}",requiredProps="id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="id" type="xs:string">
+        <xs:element name="id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Allotted Resource id UUID assigned to this instance.")</annox:annotate>
@@ -3214,11 +3214,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Represents a slice or partial piece of a resource that gets separately allotted",nameProps="description",uniqueProps="id",indexedProps="id,model-invariant-id,model-version-id,type,role",dependentOn="service-instance",container="allotted-resources",uriTemplate="/allotted-resources/allotted-resource/{id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Represents a slice or partial piece of a resource that gets separately allotted",nameProps="description",uniqueProps="id",indexedProps="id,model-invariant-id,model-version-id,type,role",dependentOn="service-instance",container="allotted-resources",uriTemplate="/allotted-resources/allotted-resource/{id}",requiredProps="id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="id" type="xs:string">
+        <xs:element name="id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Allotted Resource id UUID assigned to this instance.")</annox:annotate>
@@ -3316,11 +3316,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Instance of a service",indexedProps="service-instance-id,model-invariant-id,model-version-id,widget-model-id,widget-model-version,service-instance-name,service-instance-location-id,orchestration-status,environment-context,workload-context",nameProps="service-instance-name",searchable="service-instance-id,service-instance-name",uniqueProps="service-instance-id",dependentOn="service-subscription",container="service-instances",uriTemplate="/service-instances/service-instance/{service-instance-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Instance of a service",indexedProps="service-instance-id,model-invariant-id,model-version-id,widget-model-id,widget-model-version,service-instance-name,service-instance-location-id,orchestration-status,environment-context,workload-context",nameProps="service-instance-name",searchable="service-instance-id,service-instance-name",uniqueProps="service-instance-id",dependentOn="service-subscription",container="service-instances",uriTemplate="/service-instances/service-instance/{service-instance-id}",requiredProps="service-instance-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="service-instance-id" type="xs:string">
+        <xs:element name="service-instance-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Uniquely identifies this instance of a service")</annox:annotate>
@@ -3510,11 +3510,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Object that group service instances.",indexedProps="service-type",dependentOn="customer",container="service-subscriptions",crossEntityReference="service-instance,service-type",uriTemplate="/service-subscriptions/service-subscription/{service-type}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Object that group service instances.",indexedProps="service-type",dependentOn="customer",container="service-subscriptions",crossEntityReference="service-instance,service-type",uriTemplate="/service-subscriptions/service-subscription/{service-type}",requiredProps="service-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="service-type" type="xs:string">
+        <xs:element name="service-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Value defined by orchestration to identify this service across ECOMP.")</annox:annotate>
@@ -3556,25 +3556,25 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="customer identifiers to provide linkage back to BSS information.",nameProps="subscriber-name",indexedProps="subscriber-name,global-customer-id,subscriber-type",searchable="global-customer-id,subscriber-name",uniqueProps="global-customer-id",container="customers",namespace="business",uriTemplate="/business/customers/customer/{global-customer-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="customer identifiers to provide linkage back to BSS information.",nameProps="subscriber-name",indexedProps="subscriber-name,global-customer-id,subscriber-type",searchable="global-customer-id,subscriber-name",uniqueProps="global-customer-id",container="customers",namespace="business",uriTemplate="/business/customers/customer/{global-customer-id}",requiredProps="global-customer-id,subscriber-name,subscriber-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="global-customer-id" type="xs:string">
+        <xs:element name="global-customer-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Global customer id used across ECOMP to uniquely identify customer.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="subscriber-name" type="xs:string">
+        <xs:element name="subscriber-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Subscriber name, an alternate way to retrieve a customer.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="subscriber-type" type="xs:string">
+        <xs:element name="subscriber-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Subscriber type, a way to provide VID with only the INFRA customers.",defaultValue="CUST")</annox:annotate>
@@ -3609,11 +3609,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="describes a line-of-business",indexedProps="line-of-business-name",uniqueProps="line-of-business-name",container="lines-of-business",namespace="business",uriTemplate="/business/lines-of-business/line-of-business/{line-of-business-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="describes a line-of-business",indexedProps="line-of-business-name",uniqueProps="line-of-business-name",container="lines-of-business",namespace="business",uriTemplate="/business/lines-of-business/line-of-business/{line-of-business-name}",requiredProps="line-of-business-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="line-of-business-name" type="xs:string">
+        <xs:element name="line-of-business-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Name of the line-of-business (product)")</annox:annotate>
@@ -3647,18 +3647,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="describes an owning-entity",indexedProps="owning-entity-id,owning-entity-name",searchable="owning-entity-id",uniqueProps="owning-entity-id,owning-entity-name",container="owning-entities",namespace="business",uriTemplate="/business/owning-entities/owning-entity/{owning-entity-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="describes an owning-entity",indexedProps="owning-entity-id,owning-entity-name",searchable="owning-entity-id",uniqueProps="owning-entity-id,owning-entity-name",container="owning-entities",namespace="business",uriTemplate="/business/owning-entities/owning-entity/{owning-entity-id}",requiredProps="owning-entity-id,owning-entity-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="owning-entity-id" type="xs:string">
+        <xs:element name="owning-entity-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="UUID of an owning entity")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="owning-entity-name" type="xs:string">
+        <xs:element name="owning-entity-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Owning entity name")</annox:annotate>
@@ -3692,11 +3692,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="describes a platform",indexedProps="platform-name",uniqueProps="platform-name",container="platforms",namespace="business",uriTemplate="/business/platforms/platform/{platform-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="describes a platform",indexedProps="platform-name",uniqueProps="platform-name",container="platforms",namespace="business",uriTemplate="/business/platforms/platform/{platform-name}",requiredProps="platform-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="platform-name" type="xs:string">
+        <xs:element name="platform-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Name of the platform")</annox:annotate>
@@ -3730,11 +3730,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="describes the project",indexedProps="project-name",uniqueProps="project-name",container="projects",namespace="business",uriTemplate="/business/projects/project/{project-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="describes the project",indexedProps="project-name",uniqueProps="project-name",container="projects",namespace="business",uriTemplate="/business/projects/project/{project-name}",requiredProps="project-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="project-name" type="xs:string">
+        <xs:element name="project-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Name of the project deploying a service")</annox:annotate>
@@ -3785,25 +3785,25 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Image object that pertain to a VNF that doesn't have associated vservers.  This is a kludge.",indexedProps="application,vnf-image-uuid,application-vendor,application-version",uniqueProps="vnf-image-uuid",container="vnf-images",namespace="service-design-and-creation",uriTemplate="/service-design-and-creation/vnf-images/vnf-image/{vnf-image-uuid}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Image object that pertain to a VNF that doesn't have associated vservers.  This is a kludge.",indexedProps="application,vnf-image-uuid,application-vendor,application-version",uniqueProps="vnf-image-uuid",container="vnf-images",namespace="service-design-and-creation",uriTemplate="/service-design-and-creation/vnf-images/vnf-image/{vnf-image-uuid}",requiredProps="vnf-image-uuid,application,application-vendor")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vnf-image-uuid" type="xs:string">
+        <xs:element name="vnf-image-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of this asset")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="application" type="xs:string">
+        <xs:element name="application" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="The application that the image instantiates.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="application-vendor" type="xs:string">
+        <xs:element name="application-vendor" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="The vendor of the application.")</annox:annotate>
@@ -3851,18 +3851,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Stand-in for service model definitions.  Likely to be deprecated in favor of models from ASDC.  Does not strictly map to ASDC services.",indexedProps="service-description,service-id",container="services",namespace="service-design-and-creation",uriTemplate="/service-design-and-creation/services/service/{service-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Stand-in for service model definitions.  Likely to be deprecated in favor of models from ASDC.  Does not strictly map to ASDC services.",indexedProps="service-description,service-id",container="services",namespace="service-design-and-creation",uriTemplate="/service-design-and-creation/services/service/{service-id}",requiredProps="service-id,service-description")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="service-id" type="xs:string">
+        <xs:element name="service-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="This gets defined by others to provide a unique ID for the service, we accept what is sent.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="service-description" type="xs:string">
+        <xs:element name="service-description" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Description of the service")</annox:annotate>
@@ -3910,18 +3910,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Early definition of server/resource pairings, likely to be replaced by models.  No new use should be made of this.",indexedProps="service-type,vnf-type",container="service-capabilities",namespace="service-design-and-creation",uriTemplate="/service-design-and-creation/service-capabilities/service-capability/{service-type}/{vnf-type}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Early definition of server/resource pairings, likely to be replaced by models.  No new use should be made of this.",indexedProps="service-type,vnf-type",container="service-capabilities",namespace="service-design-and-creation",uriTemplate="/service-design-and-creation/service-capabilities/service-capability/{service-type}/{vnf-type}",requiredProps="service-type,vnf-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="service-type" type="xs:string">
+        <xs:element name="service-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="This gets defined by others to provide a unique ID for the service, we accept what is sent.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="vnf-type" type="xs:string">
+        <xs:element name="vnf-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="String capturing type of vnf, that was intended to identify the ASDC resource.  This field has been overloaded in service-specific ways and clients should expect changes to occur in the future to this field as ECOMP matures.")</annox:annotate>
@@ -3955,18 +3955,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="This is how we would capture constraints defining allowed sets of elements.",uniqueProps="element-choice-set-uuid",indexedProps="element-choice-set-uuid",allowDirectRead="true",allowDirectWrite="false",container="element-choice-sets",uriTemplate="/element-choice-sets/element-choice-set/{element-choice-set-uuid}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="This is how we would capture constraints defining allowed sets of elements.",uniqueProps="element-choice-set-uuid",indexedProps="element-choice-set-uuid",allowDirectRead="true",allowDirectWrite="false",container="element-choice-sets",uriTemplate="/element-choice-sets/element-choice-set/{element-choice-set-uuid}",requiredProps="element-choice-set-uuid,element-choice-set-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="element-choice-set-uuid" type="xs:string">
+        <xs:element name="element-choice-set-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,autoGenerateUuid="true")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="element-choice-set-name" type="xs:string"/>
+        <xs:element name="element-choice-set-name" type="xs:string" minOccurs="0"/>
         <xs:element name="cardinality" type="xs:string" minOccurs="0"/>
         <xs:element name="resource-version" type="xs:string" minOccurs="0"/>
         <xs:element ref="tns:model-elements" minOccurs="0"/>
@@ -3985,19 +3985,19 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="This is how we would capture constraints defining allowed sets of elements.",uniqueProps="constrained-element-set-uuid",indexedProps="constrained-element-set-uuid",allowDirectRead="true",allowDirectWrite="false",container="constrained-element-sets",uriTemplate="/constrained-element-sets/constrained-element-set/{constrained-element-set-uuid}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="This is how we would capture constraints defining allowed sets of elements.",uniqueProps="constrained-element-set-uuid",indexedProps="constrained-element-set-uuid",allowDirectRead="true",allowDirectWrite="false",container="constrained-element-sets",uriTemplate="/constrained-element-sets/constrained-element-set/{constrained-element-set-uuid}",requiredProps="constrained-element-set-uuid,constraint-type,check-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="constrained-element-set-uuid" type="xs:string">
+        <xs:element name="constrained-element-set-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,autoGenerateUuid="true")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="constraint-type" type="xs:string"/>
-        <xs:element name="check-type" type="xs:string"/>
+        <xs:element name="constraint-type" type="xs:string" minOccurs="0"/>
+        <xs:element name="check-type" type="xs:string" minOccurs="0"/>
         <xs:element name="resource-version" type="xs:string" minOccurs="0"/>
         <xs:element ref="tns:element-choice-sets" minOccurs="0"/>
         <xs:element ref="tns:relationship-list" minOccurs="0"/>
@@ -4015,18 +4015,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="This is how we would capture constraints defining allowed sets of elements.",uniqueProps="model-constraint-uuid",indexedProps="model-constraint-uuid",allowDirectRead="true",allowDirectWrite="false",container="model-constraints",uriTemplate="/model-constraints/model-constraint/{model-constraint-uuid}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="This is how we would capture constraints defining allowed sets of elements.",uniqueProps="model-constraint-uuid",indexedProps="model-constraint-uuid",allowDirectRead="true",allowDirectWrite="false",container="model-constraints",uriTemplate="/model-constraints/model-constraint/{model-constraint-uuid}",requiredProps="model-constraint-uuid,constrained-element-set-uuid-to-replace")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="model-constraint-uuid" type="xs:string">
+        <xs:element name="model-constraint-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,autoGenerateUuid="true")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="constrained-element-set-uuid-to-replace" type="xs:string"/>
+        <xs:element name="constrained-element-set-uuid-to-replace" type="xs:string" minOccurs="0"/>
         <xs:element ref="tns:constrained-element-sets" minOccurs="0"/>
         <xs:element name="resource-version" type="xs:string" minOccurs="0">
           <xs:annotation>
@@ -4049,25 +4049,25 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Defines how other models combine to make up a higher-level model.",uniqueProps="model-element-uuid",indexedProps="model-element-uuid",allowDirectRead="true",allowDirectWrite="false",container="model-elements",uriTemplate="/model-elements/model-element/{model-element-uuid}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Defines how other models combine to make up a higher-level model.",uniqueProps="model-element-uuid",indexedProps="model-element-uuid",allowDirectRead="true",allowDirectWrite="false",container="model-elements",uriTemplate="/model-elements/model-element/{model-element-uuid}",requiredProps="model-element-uuid,new-data-del-flag,cardinality")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="model-element-uuid" type="xs:string">
+        <xs:element name="model-element-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,autoGenerateUuid="true")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="new-data-del-flag" type="xs:string">
+        <xs:element name="new-data-del-flag" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Indicates whether this element was created as part of instantiation from this model")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="cardinality" type="xs:string">
+        <xs:element name="cardinality" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="How many of this type of element are required/allowed")</annox:annotate>
@@ -4111,25 +4111,25 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Subgraph definition provided by ASDC to describe a specific version of an inventory asset and its connections related to ASDC models",nameProps="model-name",indexedProps="model-version-id,model-name,model-version,distribution-status",uniqueProps="model-version-id",container="model-vers",uriTemplate="/model-vers/model-ver/{model-version-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Subgraph definition provided by ASDC to describe a specific version of an inventory asset and its connections related to ASDC models",nameProps="model-name",indexedProps="model-version-id,model-name,model-version,distribution-status",uniqueProps="model-version-id",container="model-vers",uriTemplate="/model-vers/model-ver/{model-version-id}",requiredProps="model-version-id,model-name,model-version")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="model-version-id" type="xs:string">
+        <xs:element name="model-version-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique identifier corresponding to one version of a model in ASDC")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="model-name" type="xs:string">
+        <xs:element name="model-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Name of the model, which can change from version to version.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="model-version" type="xs:string">
+        <xs:element name="model-version" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Version")</annox:annotate>
@@ -4174,18 +4174,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Subgraph definition provided by ASDC to describe an inventory asset and its connections related to ASDC models, independent of version",nameProps="model-type",indexedProps="model-invariant-id,model-type",uniqueProps="model-invariant-id",container="models",namespace="service-design-and-creation",uriTemplate="/service-design-and-creation/models/model/{model-invariant-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Subgraph definition provided by ASDC to describe an inventory asset and its connections related to ASDC models, independent of version",nameProps="model-type",indexedProps="model-invariant-id,model-type",uniqueProps="model-invariant-id",container="models",namespace="service-design-and-creation",uriTemplate="/service-design-and-creation/models/model/{model-invariant-id}",requiredProps="model-invariant-id,model-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="model-invariant-id" type="xs:string">
+        <xs:element name="model-invariant-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique identifier corresponding to the main definition of a model in ASDC")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="model-type" type="xs:string">
+        <xs:element name="model-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Type of the model, e.g., service, resource, widget, etc.")</annox:annotate>
@@ -4220,21 +4220,21 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="TBD",uniqueProps="related-lookup-uuid",indexedProps="related-lookup-uuid",allowDirectRead="true",allowDirectWrite="false",container="related-lookups",uriTemplate="/related-lookups/related-lookup/{related-lookup-uuid}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="TBD",uniqueProps="related-lookup-uuid",indexedProps="related-lookup-uuid",allowDirectRead="true",allowDirectWrite="false",container="related-lookups",uriTemplate="/related-lookups/related-lookup/{related-lookup-uuid}",requiredProps="related-lookup-uuid,source-node-type,source-node-property,target-node-type,target-node-property")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="related-lookup-uuid" type="xs:string">
+        <xs:element name="related-lookup-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,autoGenerateUuid="true")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="source-node-type" type="xs:string"/>
-        <xs:element name="source-node-property" type="xs:string"/>
-        <xs:element name="target-node-type" type="xs:string"/>
-        <xs:element name="target-node-property" type="xs:string"/>
+        <xs:element name="source-node-type" type="xs:string" minOccurs="0"/>
+        <xs:element name="source-node-property" type="xs:string" minOccurs="0"/>
+        <xs:element name="target-node-type" type="xs:string" minOccurs="0"/>
+        <xs:element name="target-node-property" type="xs:string" minOccurs="0"/>
         <xs:element name="property-collect-list" type="xs:string" minOccurs="0" maxOccurs="5000"/>
         <xs:element name="resource-version" type="xs:string" minOccurs="0"/>
         <xs:element ref="tns:relationship-list" minOccurs="0"/>
@@ -4252,20 +4252,20 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="TBD",uniqueProps="property-constraint-uuid",indexedProps="property-constraint-uuid",allowDirectRead="true",allowDirectWrite="false",container="property-constraints",uriTemplate="/property-constraints/property-constraint/{property-constraint-uuid}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="TBD",uniqueProps="property-constraint-uuid",indexedProps="property-constraint-uuid",allowDirectRead="true",allowDirectWrite="false",container="property-constraints",uriTemplate="/property-constraints/property-constraint/{property-constraint-uuid}",requiredProps="property-constraint-uuid,constraint-type,property-name,property-value")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="property-constraint-uuid" type="xs:string">
+        <xs:element name="property-constraint-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,autoGenerateUuid="true")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="constraint-type" type="xs:string"/>
-        <xs:element name="property-name" type="xs:string"/>
-        <xs:element name="property-value" type="xs:string"/>
+        <xs:element name="constraint-type" type="xs:string" minOccurs="0"/>
+        <xs:element name="property-name" type="xs:string" minOccurs="0"/>
+        <xs:element name="property-value" type="xs:string" minOccurs="0"/>
         <xs:element name="resource-version" type="xs:string" minOccurs="0"/>
       </xs:sequence>
     </xs:complexType>
@@ -4281,11 +4281,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="TBD",uniqueProps="named-query-element-uuid",indexedProps="named-query-element-uuid",allowDirectRead="true",allowDirectWrite="false",container="named-query-elements",uriTemplate="/named-query-elements/named-query-element/{named-query-element-uuid}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="TBD",uniqueProps="named-query-element-uuid",indexedProps="named-query-element-uuid",allowDirectRead="true",allowDirectWrite="false",container="named-query-elements",uriTemplate="/named-query-elements/named-query-element/{named-query-element-uuid}",requiredProps="named-query-element-uuid")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="named-query-element-uuid" type="xs:string">
+        <xs:element name="named-query-element-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,autoGenerateUuid="true")</annox:annotate>
@@ -4314,19 +4314,19 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="TBD",nameProps="named-query-name",uniqueProps="named-query-uuid",indexedProps="named-query-uuid,named-query-name",container="named-queries",namespace="service-design-and-creation",uriTemplate="/service-design-and-creation/named-queries/named-query/{named-query-uuid}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="TBD",nameProps="named-query-name",uniqueProps="named-query-uuid",indexedProps="named-query-uuid,named-query-name",container="named-queries",namespace="service-design-and-creation",uriTemplate="/service-design-and-creation/named-queries/named-query/{named-query-uuid}",requiredProps="named-query-uuid,named-query-name,named-query-version")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="named-query-uuid" type="xs:string">
+        <xs:element name="named-query-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true)</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="named-query-name" type="xs:string"/>
-        <xs:element name="named-query-version" type="xs:string"/>
+        <xs:element name="named-query-name" type="xs:string" minOccurs="0"/>
+        <xs:element name="named-query-version" type="xs:string" minOccurs="0"/>
         <xs:element name="required-input-params" minOccurs="0">
           <xs:complexType>
             <xs:sequence>
@@ -4368,11 +4368,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Logical links generally connect l-interfaces but are used to express logical connectivity between two points",indexedProps="link-name,model-invariant-id,model-version-id,widget-model-id,widget-model-version,link-id,prov-status,circuit-id,purpose",uniqueProps="link-id",container="logical-links",namespace="network",searchable="link-name",uriTemplate="/network/logical-links/logical-link/{link-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Logical links generally connect l-interfaces but are used to express logical connectivity between two points",indexedProps="link-name,model-invariant-id,model-version-id,widget-model-id,widget-model-version,link-id,prov-status,circuit-id,purpose",uniqueProps="link-id",container="logical-links",namespace="network",searchable="link-name",uriTemplate="/network/logical-links/logical-link/{link-name}",requiredProps="link-name,in-maint,link-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="link-name" type="xs:string">
+        <xs:element name="link-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="e.g., evc-name, or vnf-nameA_interface-nameA_vnf-nameZ_interface-nameZ")</annox:annotate>
@@ -4386,7 +4386,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="link-type" type="xs:string">
+        <xs:element name="link-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Type of logical link, e.g., evc")</annox:annotate>
@@ -4536,7 +4536,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="cos" type="xs:string">
+        <xs:element name="cos" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="unique identifier of probe")</annox:annotate>
@@ -4588,7 +4588,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="site-pair-id" type="xs:string">
+        <xs:element name="site-pair-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="unique identifier of probe")</annox:annotate>
@@ -4662,7 +4662,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="routing-instance-id" type="xs:string">
+        <xs:element name="routing-instance-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique id of routing instance")</annox:annotate>
@@ -4704,11 +4704,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Set of instances for probes used to measure service level agreements",indexedProps="site-pair-set-id",uniqueProps="site-pair-set-id",container="site-pair-sets",namespace="network",uriTemplate="/network/site-pair-sets/site-pair-set/{site-pair-set-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Set of instances for probes used to measure service level agreements",indexedProps="site-pair-set-id",uniqueProps="site-pair-set-id",container="site-pair-sets",namespace="network",uriTemplate="/network/site-pair-sets/site-pair-set/{site-pair-set-id}",requiredProps="site-pair-set-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="site-pair-set-id" type="xs:string">
+        <xs:element name="site-pair-set-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique id of site pair set.")</annox:annotate>
@@ -4743,18 +4743,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Route target information",container="route-targets",dependentOn="vpn-binding",canBeLinked="true",uriTemplate="/route-targets/route-target/{global-route-target}/{route-target-role}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Route target information",container="route-targets",dependentOn="vpn-binding",canBeLinked="true",uriTemplate="/route-targets/route-target/{global-route-target}/{route-target-role}",requiredProps="global-route-target,route-target-role")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="global-route-target" type="xs:string">
+        <xs:element name="global-route-target" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Number used to identify an RT, globally unique in the network")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="route-target-role" type="xs:string">
+        <xs:element name="route-target-role" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Role assigned to this route target")</annox:annotate>
@@ -4788,18 +4788,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="VPN binding",nameProps="vpn-name,vpn-type",indexedProps="vpn-name,vpn-id,vpn-type",searchable="vpn-id,vpn-name",uniqueProps="vpn-id",container="vpn-bindings",namespace="network",uriTemplate="/network/vpn-bindings/vpn-binding/{vpn-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="VPN binding",nameProps="vpn-name,vpn-type",indexedProps="vpn-name,vpn-id,vpn-type",searchable="vpn-id,vpn-name",uniqueProps="vpn-id",container="vpn-bindings",namespace="network",uriTemplate="/network/vpn-bindings/vpn-binding/{vpn-id}",requiredProps="vpn-id,vpn-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vpn-id" type="xs:string">
+        <xs:element name="vpn-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="VPN ID, globally unique within A&amp;AI")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="vpn-name" type="xs:string">
+        <xs:element name="vpn-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="VPN Name")</annox:annotate>
@@ -4870,11 +4870,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="VPLS Provider Edge routers.",indexedProps="prov-status,equipment-name",container="vpls-pes",namespace="network",uriTemplate="/network/vpls-pes/vpls-pe/{equipment-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="VPLS Provider Edge routers.",indexedProps="prov-status,equipment-name",container="vpls-pes",namespace="network",uriTemplate="/network/vpls-pes/vpls-pe/{equipment-name}",requiredProps="equipment-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="equipment-name" type="xs:string">
+        <xs:element name="equipment-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true)</annox:annotate>
@@ -4942,21 +4942,21 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="multicast-configuration-id" type="xs:string">
+        <xs:element name="multicast-configuration-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique id of multicast configuration.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="multicast-protocol" type="xs:string">
+        <xs:element name="multicast-protocol" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="protocol of multicast configuration")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="rp-type" type="xs:string">
+        <xs:element name="rp-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="rp type of multicast configuration")</annox:annotate>
@@ -4994,7 +4994,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="cvlan-tag" type="xs:unsignedInt">
+        <xs:element name="cvlan-tag" type="xs:unsignedInt" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="See mis-na-virtualization-platform.yang")</annox:annotate>
@@ -5023,11 +5023,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Used to capture the network interfaces of this VCE",nameProps="port-group-name",indexedProps="port-group-id,heat-stack-id,interface-id,interface-name,switch-name",dependentOn="vce",container="port-groups",uriTemplate="/port-groups/port-group/{interface-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Used to capture the network interfaces of this VCE",nameProps="port-group-name",indexedProps="port-group-id,heat-stack-id,interface-id,interface-name,switch-name",dependentOn="vce",container="port-groups",uriTemplate="/port-groups/port-group/{interface-id}",requiredProps="interface-id,orchestration-status")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="interface-id" type="xs:string">
+        <xs:element name="interface-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of the interface")</annox:annotate>
@@ -5083,7 +5083,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="orchestration-status" type="xs:string">
+        <xs:element name="orchestration-status" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Orchestration status of this VNF, mastered by MSO")</annox:annotate>
@@ -5120,18 +5120,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Metadata for license group.",indexedProps="group-uuid,resource-uuid",dependentOn="generic-vnf,vce",container="licenses",uriTemplate="/licenses/license/{group-uuid}/{resource-uuid}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Metadata for license group.",indexedProps="group-uuid,resource-uuid",dependentOn="generic-vnf,vce",container="licenses",uriTemplate="/licenses/license/{group-uuid}/{resource-uuid}",requiredProps="group-uuid,resource-uuid")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="group-uuid" type="xs:string">
+        <xs:element name="group-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID for the license group the resource belongs to, should be uuid.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="resource-uuid" type="xs:string">
+        <xs:element name="resource-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of a license resource. ")</annox:annotate>
@@ -5165,18 +5165,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Metadata for entitlement group.",indexedProps="group-uuid,resource-uuid",dependentOn="generic-vnf,vce",container="entitlements",uriTemplate="/entitlements/entitlement/{group-uuid}/{resource-uuid}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Metadata for entitlement group.",indexedProps="group-uuid,resource-uuid",dependentOn="generic-vnf,vce",container="entitlements",uriTemplate="/entitlements/entitlement/{group-uuid}/{resource-uuid}",requiredProps="group-uuid,resource-uuid")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="group-uuid" type="xs:string">
+        <xs:element name="group-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID for the entitlement group the resource comes from, should be uuid.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="resource-uuid" type="xs:string">
+        <xs:element name="resource-uuid" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of an entitlement resource. ")</annox:annotate>
@@ -5210,18 +5210,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Virtual Customer Edge Router, used specifically for Gamma.  This object is deprecated.",nameProps="vnf-name",indexedProps="vnf-name,vnf-name2,vnf-type,heat-stack-id,vnf-id,interface-name,regional-resource-zone,vpe-id,prov-status,service-id",searchable="vnf-id,vnf-name,vnf-name2",uniqueProps="vnf-id",container="vces",namespace="network",extendsFrom="vnf",uriTemplate="/network/vces/vce/{vnf-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Virtual Customer Edge Router, used specifically for Gamma.  This object is deprecated.",nameProps="vnf-name",indexedProps="vnf-name,vnf-name2,vnf-type,heat-stack-id,vnf-id,interface-name,regional-resource-zone,vpe-id,prov-status,service-id",searchable="vnf-id,vnf-name,vnf-name2",uniqueProps="vnf-id",container="vces",namespace="network",extendsFrom="vnf",uriTemplate="/network/vces/vce/{vnf-id}",requiredProps="vnf-id,vnf-name,vnf-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vnf-id" type="xs:string">
+        <xs:element name="vnf-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique id of VNF.  This is unique across the graph.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="vnf-name" type="xs:string">
+        <xs:element name="vnf-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Name of VNF.")</annox:annotate>
@@ -5235,7 +5235,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="vnf-type" type="xs:string">
+        <xs:element name="vnf-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="String capturing type of vnf, that was intended to identify the ASDC resource.  This field has been overloaded in service-specific ways and clients should expect changes to occur in the future to this field as ECOMP matures.")</annox:annotate>
@@ -5374,21 +5374,21 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vnfc-name" type="xs:string">
+        <xs:element name="vnfc-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of vnfc.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="nfc-naming-code" type="xs:string">
+        <xs:element name="nfc-naming-code" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Short code that is used in naming instances of the item being modeled")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="nfc-function" type="xs:string">
+        <xs:element name="nfc-function" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="English description of function that the specific resource deployment is providing. Assigned as part of the customization of a resource in a service")</annox:annotate>
@@ -5491,21 +5491,21 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="host-route-id" type="xs:string">
+        <xs:element name="host-route-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="host-route id")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="route-prefix" type="xs:string">
+        <xs:element name="route-prefix" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="subnet prefix")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="next-hop" type="xs:string">
+        <xs:element name="next-hop" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Could be ip-address, hostname, or service-instance")</annox:annotate>
@@ -5545,7 +5545,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="subnet-id" type="xs:string">
+        <xs:element name="subnet-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Subnet ID, should be UUID.")</annox:annotate>
@@ -5670,7 +5670,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vlan-id-inner" type="xs:unsignedInt">
+        <xs:element name="vlan-id-inner" type="xs:unsignedInt" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="id.")</annox:annotate>
@@ -5699,11 +5699,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack segmentation assignment.",indexedProps="segmentation-id",dependentOn="l3-network",container="segmentation-assignments",uriTemplate="/segmentation-assignments/segmentation-assignment/{segmentation-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack segmentation assignment.",indexedProps="segmentation-id",dependentOn="l3-network",container="segmentation-assignments",uriTemplate="/segmentation-assignments/segmentation-assignment/{segmentation-id}",requiredProps="segmentation-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="segmentation-id" type="xs:string">
+        <xs:element name="segmentation-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Route Table Reference id, UUID assigned to this instance.")</annox:annotate>
@@ -5737,11 +5737,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Generic network definition",nameProps="network-name",indexedProps="heat-stack-id,network-uuid,service-id,network-id,network-name,model-invariant-id,model-version-id,widget-model-id,widget-model-version,contrail-network-fqdn,network-role",searchable="network-id,network-name",uniqueProps="network-id",container="l3-networks",namespace="network",uriTemplate="/network/l3-networks/l3-network/{network-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Generic network definition",nameProps="network-name",indexedProps="heat-stack-id,network-uuid,service-id,network-id,network-name,model-invariant-id,model-version-id,widget-model-id,widget-model-version,contrail-network-fqdn,network-role",searchable="network-id,network-name",uniqueProps="network-id",container="l3-networks",namespace="network",uriTemplate="/network/l3-networks/l3-network/{network-id}",requiredProps="network-id,is-bound-to-vpn,is-provider-network,is-shared-network,is-external-network")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="network-id" type="xs:string">
+        <xs:element name="network-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Network ID, should be uuid. Unique across A&amp;AI.")</annox:annotate>
@@ -5951,7 +5951,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="network-policy-id" type="xs:string">
+        <xs:element name="network-policy-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="UUID representing unique key to this instance")</annox:annotate>
@@ -5994,11 +5994,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="a deployment unit of VNFCs",indexedProps="vf-module-id,vf-module-name,heat-stack-id,model-invariant-id,model-version-id,widget-model-id,widget-model-version,contrail-service-instance-fqdn",searchable="vf-module-id,vf-module-name",dependentOn="generic-vnf",container="vf-modules",uriTemplate="/vf-modules/vf-module/{vf-module-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="a deployment unit of VNFCs",indexedProps="vf-module-id,vf-module-name,heat-stack-id,model-invariant-id,model-version-id,widget-model-id,widget-model-version,contrail-service-instance-fqdn",searchable="vf-module-id,vf-module-name",dependentOn="generic-vnf",container="vf-modules",uriTemplate="/vf-modules/vf-module/{vf-module-id}",requiredProps="vf-module-id,is-base-vf-module")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vf-module-id" type="xs:string">
+        <xs:element name="vf-module-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of vf-module.")</annox:annotate>
@@ -6123,11 +6123,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="General purpose VNF",nameProps="vnf-name",indexedProps="is-closed-loop-disabled,vnf-name2,vnf-type,heat-stack-id,in-maint,vnf-name,vnf-id,regional-resource-zone,prov-status,service-id,model-invariant-id,model-version-id,widget-model-id,widget-model-version,nf-type,nf-function,nf-naming-code,nf-role",searchable="vnf-id,vnf-name,vnf-name2",uniqueProps="vnf-id",container="generic-vnfs",namespace="network",extendsFrom="vnf",containsSuggestibleProps="true",suggestionAliases="VNFs",uriTemplate="/network/generic-vnfs/generic-vnf/{vnf-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="General purpose VNF",nameProps="vnf-name",indexedProps="is-closed-loop-disabled,vnf-name2,vnf-type,heat-stack-id,in-maint,vnf-name,vnf-id,regional-resource-zone,prov-status,service-id,model-invariant-id,model-version-id,widget-model-id,widget-model-version,nf-type,nf-function,nf-naming-code,nf-role",searchable="vnf-id,vnf-name,vnf-name2",uniqueProps="vnf-id",container="generic-vnfs",namespace="network",extendsFrom="vnf",containsSuggestibleProps="true",suggestionAliases="VNFs",uriTemplate="/network/generic-vnfs/generic-vnf/{vnf-id}",requiredProps="vnf-id,vnf-type,in-maint,is-closed-loop-disabled")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vnf-id" type="xs:string">
+        <xs:element name="vnf-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique id of VNF.  This is unique across the graph.")</annox:annotate>
@@ -6155,7 +6155,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="vnf-type" type="xs:string">
+        <xs:element name="vnf-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="String capturing type of vnf, that was intended to identify the ASDC resource.  This field has been overloaded in service-specific ways and clients should expect changes to occur in the future to this field as ECOMP matures.")</annox:annotate>
@@ -6551,11 +6551,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="LAG links can connect lag-interfaces",indexedProps="link-name",container="lag-links",namespace="network",uriTemplate="/network/lag-links/lag-link/{link-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="LAG links can connect lag-interfaces",indexedProps="link-name",container="lag-links",namespace="network",uriTemplate="/network/lag-links/lag-link/{link-name}",requiredProps="link-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="link-name" type="xs:string">
+        <xs:element name="link-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Alphabetical concatenation of lag-interface names")</annox:annotate>
@@ -6589,18 +6589,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="This object fills in the gaps from vce that were incorporated into generic-vnf.  This object will be retired with vce.",nameProps="vnf-name",indexedProps="vnf-name,vnf-name2,vnf-type,heat-stack-id,prov-status,vnf-id2",searchable="vnf-id2,vnf-name,vnf-name2",uniqueProps="vnf-id2",container="newvces",namespace="network",uriTemplate="/network/newvces/newvce/{vnf-id2}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="This object fills in the gaps from vce that were incorporated into generic-vnf.  This object will be retired with vce.",nameProps="vnf-name",indexedProps="vnf-name,vnf-name2,vnf-type,heat-stack-id,prov-status,vnf-id2",searchable="vnf-id2,vnf-name,vnf-name2",uniqueProps="vnf-id2",container="newvces",namespace="network",uriTemplate="/network/newvces/newvce/{vnf-id2}",requiredProps="vnf-id2,vnf-name,vnf-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vnf-id2" type="xs:string">
+        <xs:element name="vnf-id2" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique id of VNF, can't use same attribute name right now until we promote this new object")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="vnf-name" type="xs:string">
+        <xs:element name="vnf-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Name of VNF.")</annox:annotate>
@@ -6614,7 +6614,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="vnf-type" type="xs:string">
+        <xs:element name="vnf-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="String capturing type of vnf, that was intended to identify the ASDC resource.  This field has been overloaded in service-specific ways and clients should expect changes to occur in the future to this field as ECOMP matures.")</annox:annotate>
@@ -6712,11 +6712,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="PNF represents a physical network function. typically equipment used in the D1 world. in 1607, this will be populated by SDN-C to represent a premises router that a uCPE connects to. But this can be used to represent any physical device that is not an AIC node or uCPE.",indexedProps="pnf-name,orchestration-status,inv-status",searchable="pnf-name",uniqueProps="pnf-name",container="pnfs",namespace="network",uriTemplate="/network/pnfs/pnf/{pnf-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="PNF represents a physical network function. typically equipment used in the D1 world. in 1607, this will be populated by SDN-C to represent a premises router that a uCPE connects to. But this can be used to represent any physical device that is not an AIC node or uCPE.",indexedProps="pnf-name,orchestration-status,inv-status",searchable="pnf-name",uniqueProps="pnf-name",container="pnfs",namespace="network",uriTemplate="/network/pnfs/pnf/{pnf-name}",requiredProps="pnf-name,in-maint")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="pnf-name" type="xs:string">
+        <xs:element name="pnf-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="unique name of Physical Network Function.")</annox:annotate>
@@ -6899,11 +6899,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Collection of physical connections, typically between p-interfaces",indexedProps="circuit-id,link-name",alternateKeys1="circuit-id",container="physical-links",namespace="network",searchable="link-name,circuit-id",uriTemplate="/network/physical-links/physical-link/{link-name}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Collection of physical connections, typically between p-interfaces",indexedProps="circuit-id,link-name",alternateKeys1="circuit-id",container="physical-links",namespace="network",searchable="link-name,circuit-id",uriTemplate="/network/physical-links/physical-link/{link-name}",requiredProps="link-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="link-name" type="xs:string">
+        <xs:element name="link-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="e.g., hostnameA_p-connection_nameA_hostnameZ+p_connection-nameZ")</annox:annotate>
@@ -7007,11 +7007,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="vig-server contains information about a vig server used for IPSec-configuration. Populated by SDN-C from 1607",indexedProps="vig-address-type",dependentOn="ipsec-configuration",container="vig-servers",uriTemplate="/vig-servers/vig-server/{vig-address-type}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="vig-server contains information about a vig server used for IPSec-configuration. Populated by SDN-C from 1607",indexedProps="vig-address-type",dependentOn="ipsec-configuration",container="vig-servers",uriTemplate="/vig-servers/vig-server/{vig-address-type}",requiredProps="vig-address-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vig-address-type" type="xs:string">
+        <xs:element name="vig-address-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="indicates whether the VIG is for AVPN or INTERNET")</annox:annotate>
@@ -7054,11 +7054,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="IPSec configuration node will contain various configuration data for the NMTE VNF. This node will have an edge to the generic-vnf (vnf type = TE). Starting 1607, this data will be populated by SDN-C",indexedProps="ipsec-configuration-id",uniqueProps="ipsec-configuration-id",container="ipsec-configurations",namespace="network",uriTemplate="/network/ipsec-configurations/ipsec-configuration/{ipsec-configuration-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="IPSec configuration node will contain various configuration data for the NMTE VNF. This node will have an edge to the generic-vnf (vnf type = TE). Starting 1607, this data will be populated by SDN-C",indexedProps="ipsec-configuration-id",uniqueProps="ipsec-configuration-id",container="ipsec-configurations",namespace="network",uriTemplate="/network/ipsec-configurations/ipsec-configuration/{ipsec-configuration-id}",requiredProps="ipsec-configuration-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="ipsec-configuration-id" type="xs:string">
+        <xs:element name="ipsec-configuration-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="UUID of this configuration")</annox:annotate>
@@ -7228,18 +7228,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack route table reference.",nameProps="route-table-reference-fqdn",uniqueProps="route-table-reference-id",indexedProps="route-table-reference-id,route-table-reference-fqdn",container="route-table-references",namespace="network",uriTemplate="/network/route-table-references/route-table-reference/{route-table-reference-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Openstack route table reference.",nameProps="route-table-reference-fqdn",uniqueProps="route-table-reference-id",indexedProps="route-table-reference-id,route-table-reference-fqdn",container="route-table-references",namespace="network",uriTemplate="/network/route-table-references/route-table-reference/{route-table-reference-id}",requiredProps="route-table-reference-id,route-table-reference-fqdn")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="route-table-reference-id" type="xs:string">
+        <xs:element name="route-table-reference-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Route Table Reference id, UUID assigned to this instance.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="route-table-reference-fqdn" type="xs:string">
+        <xs:element name="route-table-reference-fqdn" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="FQDN entry in the route table.")</annox:annotate>
@@ -7273,7 +7273,7 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="General mechanism for grouping instances",nameProps="description",uniqueProps="id",searchable="id,description",indexedProps="id,description,type,sub-type",container="instance-groups",namespace="network",uriTemplate="/network/instance-groups/instance-group/{id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="General mechanism for grouping instances",nameProps="description",uniqueProps="id",searchable="id,description",indexedProps="id,description,type,sub-type",container="instance-groups",namespace="network",uriTemplate="/network/instance-groups/instance-group/{id}",requiredProps="id,description,type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
@@ -7305,21 +7305,21 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="id" type="xs:string">
+        <xs:element name="id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Instance Group ID, UUID assigned to this instance.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="description" type="xs:string">
+        <xs:element name="description" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Descriptive text to help identify the usage of this instance-group")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="type" type="xs:string">
+        <xs:element name="type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Only valid value today is lower case ha for high availability",dbAlias="instance-group-type")</annox:annotate>
@@ -7360,32 +7360,32 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="A zone is a grouping of assets in a location homing to the same connections into the CBB",nameProps="zone-name",indexedProps="zone-id,design-type,zone-context",uniqueProps="zone-id",container="zones",namespace="network",uriTemplate="/network/zones/zone/{zone-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="A zone is a grouping of assets in a location homing to the same connections into the CBB",nameProps="zone-name",indexedProps="zone-id,design-type,zone-context",uniqueProps="zone-id",container="zones",namespace="network",uriTemplate="/network/zones/zone/{zone-id}",requiredProps="zone-id,zone-name,design-type,zone-context")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="zone-id" type="xs:string">
+        <xs:element name="zone-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Code assigned by AIC to the zone")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="zone-name" type="xs:string">
+        <xs:element name="zone-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="English name associated with the zone")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="design-type" type="xs:string">
+        <xs:element name="design-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Design of zone [Medium/Large…]")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="zone-context" type="xs:string">
+        <xs:element name="zone-context" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Context of zone [production/test]")</annox:annotate>
@@ -7426,11 +7426,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="forwarder object is an optional child object of the Configuration object.",dependentOn="configuration",uniqueProps="forwarder-evc-id",container="forwarder-evcs",uriTemplate="/forwarder-evcs/forwarder-evc/{forwarder-evc-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="forwarder object is an optional child object of the Configuration object.",dependentOn="configuration",uniqueProps="forwarder-evc-id",container="forwarder-evcs",uriTemplate="/forwarder-evcs/forwarder-evc/{forwarder-evc-id}",requiredProps="forwarder-evc-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="forwarder-evc-id" type="xs:string">
+        <xs:element name="forwarder-evc-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Key for forwarder-evc object")</annox:annotate>
@@ -7487,11 +7487,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="evc object is an optional child object of the Configuration object.",dependentOn="configuration",uniqueProps="evc-id",container="evcs",uriTemplate="/evcs/evc/{evc-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="evc object is an optional child object of the Configuration object.",dependentOn="configuration",uniqueProps="evc-id",container="evcs",uriTemplate="/evcs/evc/{evc-id}",requiredProps="evc-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="evc-id" type="xs:string">
+        <xs:element name="evc-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique/key field for the evc object")</annox:annotate>
@@ -7611,11 +7611,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Generic configuration object.",indexedProps="configuration-id,model-invariant-id,model-version-id",uniqueProps="configuration-id",container="configurations",namespace="network",uriTemplate="/network/configurations/configuration/{configuration-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Generic configuration object.",indexedProps="configuration-id,model-invariant-id,model-version-id",uniqueProps="configuration-id",container="configurations",namespace="network",uriTemplate="/network/configurations/configuration/{configuration-id}",requiredProps="configuration-id,configuration-type,configuration-sub-type")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="configuration-id" type="xs:string">
+        <xs:element name="configuration-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="UUID assigned to configuration.")</annox:annotate>
@@ -7636,14 +7636,14 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="configuration-type" type="xs:string">
+        <xs:element name="configuration-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="port-mirroring-configuration.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="configuration-sub-type" type="xs:string">
+        <xs:element name="configuration-sub-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="vprobe, pprobe.")</annox:annotate>
@@ -7743,11 +7743,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(indexedProps="sequence",description="Entity describing a sequenced segment of forwarding path",container="forwarders",dependentOn="forwarding-path",uriTemplate="/forwarders/forwarder/{sequence}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(indexedProps="sequence",description="Entity describing a sequenced segment of forwarding path",container="forwarders",dependentOn="forwarding-path",uriTemplate="/forwarders/forwarder/{sequence}",requiredProps="sequence")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="sequence" type="xs:int">
+        <xs:element name="sequence" type="xs:int" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of this segmentation")</annox:annotate>
@@ -7783,18 +7783,18 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(namespace="network",indexedProps="forwarding-path-id,forwarding-path-name",description="Entity that describes the sequenced forwarding path between interfaces of services or resources",container="forwarding-paths",nameProps="forwarding-path-name",uniqueProps="forwarding-path-id",uriTemplate="/network/forwarding-paths/forwarding-path/{forwarding-path-id}")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(namespace="network",indexedProps="forwarding-path-id,forwarding-path-name",description="Entity that describes the sequenced forwarding path between interfaces of services or resources",container="forwarding-paths",nameProps="forwarding-path-name",uniqueProps="forwarding-path-id",uriTemplate="/network/forwarding-paths/forwarding-path/{forwarding-path-id}",requiredProps="forwarding-path-id,forwarding-path-name")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="forwarding-path-id" type="xs:string">
+        <xs:element name="forwarding-path-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique ID of this FP")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="forwarding-path-name" type="xs:string">
+        <xs:element name="forwarding-path-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Name of the FP")</annox:annotate>
@@ -7935,46 +7935,46 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Allows for legacy POST of old-style and new-style models")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Allows for legacy POST of old-style and new-style models",requiredProps="model-invariant-id,model-name-version-id,model-type,model-name,model-id,model-version")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="model-invariant-id" type="xs:string">
+        <xs:element name="model-invariant-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique identifier corresponding to the main definition of a model in ASDC")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="model-name-version-id" type="xs:string">
+        <xs:element name="model-name-version-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique identifier corresponding to one version of a model in ASDC")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="model-type" type="xs:string">
+        <xs:element name="model-type" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Type of the model, e.g., service, resource, widget, etc.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="model-name" type="xs:string">
+        <xs:element name="model-name" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Name of the model, which can change from version to version.")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="model-id" type="xs:string">
+        <xs:element name="model-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Invariant unique ID which does not change from version to version")</annox:annotate>
             </xs:appinfo>
           </xs:annotation>
         </xs:element>
-        <xs:element name="model-version" type="xs:string">
+        <xs:element name="model-version" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(description="Version")</annox:annotate>
@@ -8138,11 +8138,11 @@ xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
     <xs:complexType>
       <xs:annotation>
         <xs:appinfo>
-          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Abstract vnf class",indexedProps="vnf-id",uniqueProps="vnf-id",inheritors="vce,generic-vnf",isAbstract="true")</annox:annotate>
+          <annox:annotate target="class">@org.onap.aai.annotations.Metadata(description="Abstract vnf class",indexedProps="vnf-id",uniqueProps="vnf-id",inheritors="vce,generic-vnf",isAbstract="true",requiredProps="vnf-id")</annox:annotate>
         </xs:appinfo>
       </xs:annotation>
       <xs:sequence>
-        <xs:element name="vnf-id" type="xs:string">
+        <xs:element name="vnf-id" type="xs:string" minOccurs="0">
           <xs:annotation>
             <xs:appinfo>
               <annox:annotate target="field">@org.onap.aai.annotations.Metadata(isKey=true,description="Unique id of VNF.  This is unique across the graph.")</annox:annotate>