Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -r46bf7baaa9d8095e0405b018fcd4bc594907797e -rd5f2ac4d84453feb1b782f35f9d69432977a95f6
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 46bf7baaa9d8095e0405b018fcd4bc594907797e)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision d5f2ac4d84453feb1b782f35f9d69432977a95f6)
@@ -7,8 +7,8 @@
 *
 * @file    SystemCommMessages.h
 *
-* @author  (last)      Dara Navaei
-* @date    (last)      25-May-2022
+* @author  (last)      Michael Garthwaite
+* @date    (last)      07-Sep-2022
 *
 * @author  (original)  Dara Navaei
 * @date    (original)  05-Nov-2019
@@ -158,6 +158,12 @@
 // MSG_ID_HD_OP_MODE
 BOOL handleSetHDOperationMode( MESSAGE_T *message );
 
+// MSG_ID_UI_REQUEST_SERVICE_MODE
+void handleServiceModeRequest( MESSAGE_T *message );
+
+// MSG_ID_DG_RESPONSE_SERVICE_MODE_REQUEST
+BOOL sendServiceModeResponse( BOOL accepted, U32 rejCode );
+
 // *********** public test support message functions **********
 
 // MSG_TESTER_LOG_IN
@@ -395,6 +401,15 @@
 // MSG_ID_HD_REQUEST_DG_ALARMS
 void handleResendAllAlarmsCommand( MESSAGE_T *message );
 
+// MSG_ID_DG_SET_OP_MODE_REQUEST
+void handleTestSetOpModeRequest( MESSAGE_T *message );
+
+// MSG_ID_DG_RESERVOIR_TARE_REQUEST
+void handleTestTareReservoirRequest( MESSAGE_T *message );
+
+// MSG_ID_HD_OP_MODE
+BOOL handleSetHDOperationMode( MESSAGE_T *message );
+
 /**@}*/
 
 #endif