could possibly occur in Data Router:
OK = 200 : The normal response from a successful update or get of a feed or subscription
+
CREATED = 201 : the normal response from successfully creating or subscribing to a feed.
+
NO_CONTENT = 204 : the normal response from a successful publish attempt and on successfully deleting a feed or subscription
+
MOVED_PERMANENTLY = 301 :the normal redirect response from prov to a publisher
+
BAD_REQUEST = 400: Usually indicates that either Json object in request body is incorrect in some way, or an Invalid parameter value was included in query string.
+
UNAUTHORIZED = 401 : Usually indicated either request was missing Authorization header, or indicates incorrect Username/password credentials
+
FORBIDDEN = 403 : Usually indicates the request originated from an unauthorized IP address, or that a client certificate was not a part of authorized list.
+
NOT_FOUND = 404 : Usually indicates an incorrect URI
+
METHOD_NOT_ALLOWED = 405 : Indicates an HTTP method is not accepted for given URI
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