SOL005_#110 POST Method (on Subscriptions) description and response updated

src/SOL005/NSPerformanceManagement/NSPerformanceManagement.yaml

@@ -877,6 +877,8 @@ paths:
         The POST method creates a new subscription.
         This method shall follow the provisions specified in the Tables 7.4.7.3.1-1 and 7.4.7.3.1-2 for URI query parameters,
         request and response data structures, and response codes.
+        As the result of successfully executing this method, a new "Individual subscription" resource shall exist as defined 
+        in clause 7.4.8. This method shall not trigger any notification.
         Creation of two subscription resources with the same callbackURI and the same filter can result in performance
         degradation and will provide duplicates of notifications to the OSS, and might make sense only in very rare use cases.
         Consequently, the NFVO may either allow creating a subscription resource if another subscription resource with the
@@ -910,7 +912,7 @@ paths:
           description: >
             201 CREATED
 
-            The subscription was created successfully.
+            Shall be returned when the subscription has been created successfully.
             A representation of the created subscription resource
             shall be returned in the response body, as defined in clause 7.5.2.3.
             The HTTP response shall include a "Location" HTTP