diff --git a/OpenAPI/TS28111_FaultNrm.yaml b/OpenAPI/TS28111_FaultNrm.yaml
index e5c4920965a9b9619c2847d0905090d5c4315142..7a525d13f635f975e14c2f0b5dd108cae8f18e59 100644
--- a/OpenAPI/TS28111_FaultNrm.yaml
+++ b/OpenAPI/TS28111_FaultNrm.yaml
@@ -229,6 +229,8 @@ components:
                   type: object
                   additionalProperties:
                     $ref: '#/components/schemas/AlarmRecord'
+                unreliableAlarmScope:
+                  $ref: 'TS28623_ComDefs.yaml#/components/schemas/Dn'
 
 
   #---- Definition of alarm notifications --------------------------------------------#