Index: MsgDefs.h
===================================================================
diff -u -rd18cd031dcff2fc807ce158cbb4aadfda10fd3cd -r819b88d6ef2329a7f07697e35dc00396d6ccefc2
--- MsgDefs.h	(.../MsgDefs.h)	(revision d18cd031dcff2fc807ce158cbb4aadfda10fd3cd)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision 819b88d6ef2329a7f07697e35dc00396d6ccefc2)
@@ -8,8 +8,8 @@
 *
 * @file    MsgDefs.h
 *
-* @author  (last)      Praneeth Bunne
-* @date    (last)      21-May-2026
+* @author  (last)      Dara Navaei
+* @date    (last)      27-May-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  01-Aug-2024
@@ -208,6 +208,8 @@
     MSG_ID_TD_TUBE_SET_AUTHENTICATION_ACK_RESPONSE = 0xB0,                          ///< TD tube set authentication acknowledge response
     MSG_ID_TD_SYRINGE_PUMP_DATA = 0xB1,                                             ///< TD broadcast of syringe pump data
     MSG_ID_TD_HEPARIN_PAUSE_RESUME_RESPONSE= 0xB2,                                  ///< TD response to pause/resume Heparin delivery request
+    MSG_ID_FFU_SIGNAL_TD_UPDATE_AVAILABLE = 0xB3,                                   ///< FFU signal TD update is available.
+    MSG_ID_FFU_SIGNAL_DD_UPDATE_AVAILABLE = 0xB4,                                   ///< FFU signal DD update is available.
 
     // service/test CAN messages
     MSG_ID_FIRST_TD_TESTER_MESSAGE = 0x8000,                                        ///< First TD test message ID