Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -rc230be1bd4296324bf5dfc288c212eb7c2ce5d2d -rb0f90032367640dd22ddfbe0307a20cb6e931ceb
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision c230be1bd4296324bf5dfc288c212eb7c2ce5d2d)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision b0f90032367640dd22ddfbe0307a20cb6e931ceb)
@@ -48,6 +48,13 @@
 #define ACK_REQUIRED                    TRUE        ///< Require an ACK.
 #define ACK_NOT_REQUIRED                FALSE       ///< Not require an ACK.
 
+/// UI response payload data structure
+typedef struct
+{
+    BOOL accepted;                                  ///< Accepted/Rejected
+    U32 rejectionReason;                            ///< Rejection reason if not accepted.
+} UI_RESPONSE_PAYLOAD_T;
+
 // ********** public function prototypes **********
 
 U32 serializeMessage( MESSAGE_T msg, COMM_BUFFER_T buffer, BOOL ackReq );
@@ -169,6 +176,12 @@
 // MSG_ID_HD_SEND_CHEM_FLUSH_SAMPLE_PASS_FAIL_TO_DG
 void handleReceiveChemFlushSampleResultsFromHD( MESSAGE_T *message );
 
+// MSG_ID_DG_SET_RO_MODE_ONLY
+void handleSetROOnlyMode( MESSAGE_T* message );
+
+// MSG_ID_DG_REQUEST_RO_MODE_ONLY_STATUS
+void requestROOnlyModeStatusFromUI( void );
+
 // *********** public test support message functions **********
 
 // MSG_TESTER_LOG_IN