Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -r22176ce95e49213c48454f34ddf5d29b8109f2cb -rd5f2ac4d84453feb1b782f35f9d69432977a95f6
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 22176ce95e49213c48454f34ddf5d29b8109f2cb)
+++ 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
@@ -80,6 +80,9 @@
 // MSG_ID_POWER_OFF_WARNING
 void handlePowerOffWarning( MESSAGE_T *message );
 
+// MSG_ID_RTC_EPOCH
+void handleRTCSyncFromHD( MESSAGE_T *message );
+
 // MSG_ID_ALARM_CLEARED
 void handleAlarmClear( MESSAGE_T *message );
 
@@ -152,6 +155,15 @@
 // MSG_ID_DG_SCHEDULED_RUNS_INFO
 void handleDGScheduledRunsRequest( MESSAGE_T *message );
 
+// 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
@@ -386,6 +398,15 @@
 // MSG_ID_DG_SET_USAGE_INFO_RECORD
 void handleSetDGUsageInfoRecord( MESSAGE_T *message );
 
+// 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 );