diff --git a/src/SOL002/VNFPerformanceManagementNotification/VNFPerformanceManagementNotification.yaml b/src/SOL002/VNFPerformanceManagementNotification/VNFPerformanceManagementNotification.yaml
index 4746d9ff4c331566d75b7abda6df20b75ad457fe..fe96567d6a25a13ba023dd8be464113804a09f50 100644
--- a/src/SOL002/VNFPerformanceManagementNotification/VNFPerformanceManagementNotification.yaml
+++ b/src/SOL002/VNFPerformanceManagementNotification/VNFPerformanceManagementNotification.yaml
@@ -42,7 +42,9 @@ paths:
         Notify
 
         The POST method delivers a notification regarding a performance
-        management event from the server to the client.
+        management event from API producer to an API consumer. The API consumer 
+        shall have previously created an "Individual subscription" resource with 
+        a matching filter.
       parameters:
         - name: PerformanceInformationAvailableNotification
           description: >
@@ -76,7 +78,7 @@ paths:
           description: >
             No Content
 
-            The notification was delivered successfully.
+            Shall be returned when the notification has been delivered successfully.
           headers:
             WWW-Authenticate:
               description: >
@@ -169,7 +171,9 @@ paths:
         Notify
 
         The POST method delivers a notification regarding a performance
-        management event from the server to the client.
+        management event from API producer to an API consumer. The API consumer 
+        shall have previously created an "Individual subscription" resource with 
+        a matching filter.
       parameters:
         - name: ThresholdCrossedNotification
           description: >
@@ -203,7 +207,7 @@ paths:
           description: >
             204 NO CONTENT
 
-            The notification was delivered successfully.
+            Shall be returned when the notification has been delivered successfully.
           headers:
             WWW-Authenticate:
               description: >