Index: firmware/App/Services/Messaging.c
===================================================================
diff -u -rb88a8fd2c5fca8f055d6df1437635692388fcb0d -r0e4a62ba24d906d9e5b33b293f93405b8c0391ce
--- firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision b88a8fd2c5fca8f055d6df1437635692388fcb0d)
+++ firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision 0e4a62ba24d906d9e5b33b293f93405b8c0391ce)
@@ -99,6 +99,7 @@
 static const MSG_HANDLER_LOOKUP_T MSG_FUNCTION_HANDLER_LOOKUP[] = {
     { MSG_ID_UI_ACTIVE_ALARMS_LIST_REQUEST,                             &handleActiveAlarmListRequest },
     { MSG_ID_FW_VERSIONS_REQUEST,                                       &handleVersionRequestMessage },
+    { MSG_ID_UI_CHECK_IN,                                               &handleUICheckIn },
     { MSG_ID_DD_OP_MODE_DATA,                                           &setDDOpMode },
     { MSG_ID_DD_PRESSURES_DATA,                                         &setDialysatePressure },
     { MSG_ID_UI_TREATMENT_PARAMS_TO_VALIDATE,                           &validateAndSetTreatmentParameters },
@@ -598,6 +599,19 @@
 
 /*********************************************************************//**
  * @brief
+ * The handleUICheckIn function handles a Ui check in message.
+ * @details \b Inputs: none
+ * @details \b Outputs: none
+ * @param message Pointer to the UI check-in message
+ * @return TRUE if check-in successful, FALSE if not
+ *************************************************************************/
+BOOL handleUICheckIn( MESSAGE_T *message )
+{
+    return TRUE; // no specific handling required.
+}
+
+/*********************************************************************//**
+ * @brief
  * The handleTesterLogInRequest function handles a Dialin request to login.
  * @details \b Inputs: none
  * @details \b Outputs: Dialin logged in if request is authenticated.