Index: NVDataMgmt.c
===================================================================
diff -u -r7c59cd887d070b86c0c7d6681a29a3455562c38e -rbdcb684d0519521e50bbc44e6ac276d4d851825e
--- NVDataMgmt.c	(.../NVDataMgmt.c)	(revision 7c59cd887d070b86c0c7d6681a29a3455562c38e)
+++ NVDataMgmt.c	(.../NVDataMgmt.c)	(revision bdcb684d0519521e50bbc44e6ac276d4d851825e)
@@ -2734,6 +2734,13 @@
 
         activateAlarmNoData( ALARM_ID_DG_INVALID_SYSTEM_RECORD_CRC );
     }
+    else
+    {
+        if ( RECORD_DEFAULT_CHARACTER == dgSystemGroup.dgSystemRecord.topLevelSN[ 0 ] )
+        {
+            activateAlarmNoData( ALARM_ID_DG_INVALID_SERIAL_NUMBER );
+        }
+    }
 
     return status;
 }