Index: MsgDefs.h
===================================================================
diff -u -r43bcdbff752f578fe33ff30ec5cf912454a1b685 -rb47892b0bd4a7b1e4805c05ed08b9c6e01b57fb9
--- MsgDefs.h	(.../MsgDefs.h)	(revision 43bcdbff752f578fe33ff30ec5cf912454a1b685)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision b47892b0bd4a7b1e4805c05ed08b9c6e01b57fb9)
@@ -95,7 +95,7 @@
     MSG_ID_UI_ALARM_USER_ACTION = 0x40,                                 ///< UI user has requested an alarm action
     MSG_ID_USER_UF_PAUSE_RESUME_RESPONSE = 0x41,                        ///< HD response to user request to pause or resume ultrafiltration
     MSG_ID_DG_CONCENTRATE_PUMP_DATA = 0x42,                             ///< DG broadcast of concentrate pump data
-    MSG_ID_DG_PRIMING_STATUS_DATA = 0x43,                               ///< HD priming status during cartridge prime
+    MSG_ID_HD_PRIMING_STATUS_DATA = 0x43,                               ///< HD priming status during cartridge prime
     MSG_ID_DG_UV_REACTORS_DATA = 0x44,                                  ///< DG broadcast UV reactors data
     MSG_ID_DG_THERMISTORS_DATA = 0x45,                                  ///< DG broadcast thermistors data
     MSG_ID_UI_PRESSURE_LIMITS_CHANGE_REQUEST = 0x46,                    ///< UI request to change pressure limits
@@ -109,6 +109,7 @@
     MSG_ID_UI_SET_ALARM_AUDIO_VOLUME_LEVEL_CMD = 0x4E,                  ///< UI command to set alarm audio volume level
     MSG_ID_UI_SET_UF_VOLUME_PARAMETER = 0x4F,                           ///< UI request to validate new ultrafiltration volume treatment parameter
     MSG_ID_HD_SET_UF_VOLUME_PARAMETER_RESPONSE = 0x50,                  ///< HD response to new treatment parameters set
+    MSG_ID_DG_COMMAND_RESPONSE = 0x51,                                  ///< DG response to command from HD
 
 #ifdef EMC_TEST_BUILD
     MSG_ID_CAN_ERROR_COUNT = 0x999,  // test code in support of EMC testing
@@ -266,6 +267,16 @@
 };
 typedef enum Request_Reject_Reasons REQUEST_REJECT_REASON_CODE_T;       ///< Type for settings change rejection reason codes enumeration
 
+/// Enumeration of command request rejection reason codes
+enum Cmd_Request_Reject_Reasons
+{
+    CMD_REQUEST_REJECT_REASON_NONE = 0,                                 ///< Used when there is no rejection
+    CMD_REQUEST_REJECT_REASON_INVALID_MODE = 1,                         ///< Command is not allowed in the current operating mode
+    CMD_REQUEST_REJECT_REASON_INVALID_PARAMETER = 2,                    ///< Command parameter is not valid
+    NUM_OF_CMD_REQUEST_REJECT_REASONS                                   ///< Number of command request reject codes
+};
+typedef enum Cmd_Request_Reject_Reasons CMD_REQUEST_REJECT_REASON_CODE_T;       ///< Type for command request rejection reason codes enumeration
+
 /**@}*/
 
 #endif