],
             "nfv_compute": {
                 "num_cpus": 4,
-                "mem_size": "1024MB",
+                "mem_size": "1 GB",
                 "cpu_frequency": "1GHz",
                 "flavor_extra_specs": {
                     "hw: cpu_policy": "shared",
 
     @mock.patch.object(restcall, 'call_req')
     def test_create_vnf_identifier(self, mock_call_req):
         r1_get_csarid_by_vnfdid = [0, json.JSONEncoder().encode([{'package_id': '222',
-                                                                  'csar_id': '2222',
-                                                                  'vnfd_id': '111'}]), '200']
+                                                                  'csarId': '2222',
+                                                                  'vnfdId': '111'}]), '200']
         r2_get_rawdata_from_catalog = [0, json.JSONEncoder().encode(vnfd_rawdata), '200']
         mock_call_req.side_effect = [r1_get_csarid_by_vnfdid, r2_get_rawdata_from_catalog]
         data = {
 
         try:
             self.package_info = get_packageinfo_by_vnfdid(self.vnfd_id)
             for val in self.package_info:
-                if self.vnfd_id == ignore_case_get(val, "vnfd_id"):
-                    self.package_id = ignore_case_get(val, "csar_id")
+                if self.vnfd_id == ignore_case_get(val, "vnfdId"):
+                    self.package_id = ignore_case_get(val, "csarId")
                     break
 
             raw_data = query_rawdata_from_catalog(self.package_id, self.data)
 
     param = {
         "name": "Flavor_%s" % flavor["vdu_id"],
         "vcpu": int(flavor["nfv_compute"]["num_cpus"]),
-        "memory": int(flavor["nfv_compute"]["mem_size"].replace('MB', '').strip()),
+        "memory": int(flavor["nfv_compute"]["mem_size"].replace('GB', '').strip()),
         "isPublic": True
     }
     for local_storage_id in ignore_case_get(flavor, "local_storages"):
             "fileName": inject_data["file_name"],
             "fileData": inject_data["file_data"]
         })
-    for vol_data in vm["volume_storages"]:
+    for vol_data in ignore_case_get(vm, "volume_storages"):
         vol_id = vol_data["volume_storage_id"]
         param["volumeArray"].append({
             "volumeId": get_res_id(res_cache, RES_VOLUME, vol_id)