diff --git a/OpenAPI/5gcNrm.yaml b/OpenAPI/5gcNrm.yaml
index e4c4b2619fdedf368a7c1100bf2d238b214a63ff..069fa158dd23aea24d36d268658e2a0a3b978770 100644
--- a/OpenAPI/5gcNrm.yaml
+++ b/OpenAPI/5gcNrm.yaml
@@ -463,7 +463,8 @@ components:
           type: array
           items:
             type: string
-         
+        maxNumberofPDUSessions:
+          type: integer
 
 #-------- Definition of concrete IOCs --------------------------------------------