diff --git a/src/definitions/SOL002SOL003VNFPerformanceManagement_def.yaml b/src/definitions/SOL002SOL003VNFPerformanceManagement_def.yaml
index 289e19d0e396d03801d97905d56f1683149091e6..61160e4ffb4ad6db374ae33d63b2b8e33ed7b5fb 100644
--- a/src/definitions/SOL002SOL003VNFPerformanceManagement_def.yaml
+++ b/src/definitions/SOL002SOL003VNFPerformanceManagement_def.yaml
@@ -48,10 +48,10 @@ definitions:
     description: >
       This notification informs the receiver that performance information is
       available.
-      The timing of sending this notification is determined by the capability
-      of the producing entity to evaluate the threshold crossing condition.
       The notification shall be triggered by the VNFM when new performance
       information collected by a PM job is available.
+      The periodicity of triggering this notification is influenced by the 
+      "reportingPeriod" attribute in the "PmJobCriteria" data structure.
     type: object
     required:
       - id