Index: MsgDefs.h
===================================================================
diff -u -rd2e5e9dba92b9b0b0245e3cb8b5f33250f875c7d -rc95071efc070744afe5afcc6ac632307f7051c69
--- MsgDefs.h	(.../MsgDefs.h)	(revision d2e5e9dba92b9b0b0245e3cb8b5f33250f875c7d)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision c95071efc070744afe5afcc6ac632307f7051c69)
@@ -456,7 +456,7 @@
     MSG_ID_DG_USED_ACID_VOLUME_ML_OVERRIDE = 0xA04E,                    ///< DG used acid volume override in mL
     MSG_ID_DG_SET_FANS_RPM_ALARM_START_TIME_OFFSET = 0xA04F,            ///< DG set fans RPM alarm start time offset
     MSG_ID_DG_USED_BICARB_VOLUME_ML_OVERRIDE = 0xA050,                  ///< DG used bicarb volume override in mL
-    MSG_ID_FILL_MODE_DATA_PUBLISH_INTERVAL_OVERRIDE = 0xA051,           ///< DG used concentrate publish interval override request
+    MSG_ID_FILL_MODE_DATA_PUBLISH_INTERVAL_OVERRIDE = 0xA051,           ///< DG used fill publish interval override request
     MSG_ID_DG_GEN_IDLE_PUBLISH_INTERVAL_OVERRIDE = 0xA052,              ///< DG gen idle sub-states publish interval override request
     MSG_ID_DG_GET_USAGE_INFO_RECORD = 0xA053,                           ///< DG get usage information record
     MSG_ID_DG_SET_USAGE_INFO_RECORD = 0xA054,                           ///< DG set usage information record
@@ -539,6 +539,7 @@
     REQUEST_REJECT_REASON_HD_SERVICE_IS_DUE = 48,                       ///< HD service is due
     REQUEST_REJECT_REASON_DG_CHEM_FLUSH_NOT_COMPLETED = 49,             ///< DG chemical flush is not complete
     REQUEST_REJECT_REASON_DG_RO_FILTER_TEMPERATURE_OUT_OF_RANGE = 50,   ///< DG RO filter temperature out of range
+    REQUEST_REJECT_REASON_DG_INCOMPATIBLE = 51,                         ///< DG firmware version is not compatible with HD firmware
     NUM_OF_REQUEST_REJECT_REASONS                                       ///< Number of settings change reject codes
 };
 typedef enum Request_Reject_Reasons REQUEST_REJECT_REASON_CODE_T;       ///< Type for settings change rejection reason codes enumeration