Index: MsgDefs.h
===================================================================
diff -u -r6459b30662987149d2fc333357bd89cc6459cd66 -redb7c6dc2202310af5a63291dd014e75b168a3e8
--- MsgDefs.h	(.../MsgDefs.h)	(revision 6459b30662987149d2fc333357bd89cc6459cd66)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision edb7c6dc2202310af5a63291dd014e75b168a3e8)
@@ -232,7 +232,8 @@
     MSG_ID_HD_SEND_CHEM_FLUSH_SAMPLE_PASS_FAIL_TO_DG = 0xC8,            ///< HD send chemical disinfect flush sample pass/fail to DG
     MSG_ID_DG_START_STOP_RO_PERMEATE_SAMPLE_MODE_CMD_REQUEST = 0xC9,    ///< DG start/stop RO permeate sample mode command request
     MSG_ID_DG_RO_PERMEATE_SAMPLE_DATA = 0xCA,                           ///< DG RO permeate sample mode data broadcast
-    MSG_ID_HD_SEND_RO_PERMEATE_SAMPLE_DISPENSE_REQUEST = 0xCB,          ///< HD send RO permeate sample dispense request
+    MSG_ID_HD_SEND_RO_PERMEATE_SAMPLE_DISPENSE_REQUEST_TO_DG = 0xCB,    ///< HD send RO permeate sample dispense request to DG
+    MSG_ID_DG_SEND_RO_PERMEATE_SAMPLE_DISPENSE_READY_TO_HD = 0xCD,      ///< DG send RO permeate sample dispense ready to HD
 
 #ifdef EMC_TEST_BUILD
     MSG_ID_CAN_ERROR_COUNT = 0x999,  // test code in support of EMC testing