Index: MsgDefs.h
===================================================================
diff -u -r26da5b9a6884cb4999484d5169c3a66c21906553 -r74571171a271cf51c5b876cd08efaa76d4c58ed5
--- MsgDefs.h	(.../MsgDefs.h)	(revision 26da5b9a6884cb4999484d5169c3a66c21906553)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision 74571171a271cf51c5b876cd08efaa76d4c58ed5)
@@ -78,7 +78,9 @@
     MSG_ID_DG_ACCELEROMETER_DATA = 0x34,                                ///< DG broadcast of accelerometer data
     MSG_ID_UI_NEW_TREATMENT_PARAMS = 0x35,                              ///< UI request to validate new treatment parameter set
     MSG_ID_HD_NEW_TREATMENT_PARAMS_RESPONSE = 0x36,                     ///< HD response to new treatment parameters set
-    MSG_ID_DG_HEAT_DISINFECT_DATA = 0x37,                               ///< DG heat disinfection publish data
+    MSG_ID_DG_HEAT_DISINFECT_DATA = 0x37,                               ///< DG heat disinfection publish data
+    MSG_ID_UI_START_TREATMENT = 0x38,                                   ///< UI user request to initiate a treatment
+    MSG_ID_HD_START_TREATMENT_RESPONSE = 0x39,                          ///< HD response to user request to initiate a treatment
 #ifdef EMC_TEST_BUILD
     MSG_ID_CAN_ERROR_COUNT = 0x999,  // test code in support of EMC testing
 #endif