diff --git a/OpenAPI/5gcNrm.yaml b/OpenAPI/5gcNrm.yaml
index b676afe785e64f956bfb3e512bbfc5fd2a4ece40..d7497dc28ddaba89eac96a30e5e14be8954c439d 100644
--- a/OpenAPI/5gcNrm.yaml
+++ b/OpenAPI/5gcNrm.yaml
@@ -173,6 +173,32 @@ components:
         - $ref: '#/components/schemas/UpfInfo'
         - $ref: '#/components/schemas/AmfInfo'
         - $ref: '#/components/schemas/Udrinfo'
+    NotificationType:      
+      type: string
+      enum:
+        -  N1_MESSAGES 
+        -  N2_INFORMATION
+        -  LOCATION_NOTIFICATION
+        -  DATA_REMOVAL_NOTIFICATION
+        -  DATA_CHANGE_NOTIFICATION
+        -  LOCATION_UPDATE_NOTIFICATION
+        -  NSSAA_REAUTH_NOTIFICATION
+        -  NSSAA_REVOC_NOTIFICATION
+    DefaultNotificationSubscription:
+      type: object
+      properties:
+        notificationType:
+          $ref: '#/components/schemas/NotificationType'
+        callbackURI:
+          type: string
+        n1MessageClass:  
+          type: boolean
+        n2InfroamtionClass:
+          type: boolean
+        versions:
+          type: string
+        binding:
+          type: string
     ManagedNFProfile:
       type: object
       properties:
@@ -180,6 +206,8 @@ components:
           type: string
         nfType:
           $ref: 'genericNrm.yaml#/components/schemas/NFType'
+        heartbeatTimer:
+          type: integer
         authzInfo:
           type: string
         hostAddr: