Index: MsgDefs.h
===================================================================
diff -u -r221a51e618c65224a201b2209b3609376e9f8dfa -r86ac41f46a575fd5055bc97d72d634e915507308
--- MsgDefs.h	(.../MsgDefs.h)	(revision 221a51e618c65224a201b2209b3609376e9f8dfa)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision 86ac41f46a575fd5055bc97d72d634e915507308)
@@ -527,6 +527,7 @@
     REQUEST_REJECT_REASON_HEPARIN_PAUSE_INVALID_IN_THIS_STATE = 50,                 ///< Heparin cannot be paused if not currently deliverying Heparin
     REQUEST_REJECT_REASON_HEPARIN_NOT_PAUSED = 51,                                  ///< Heparin cannot be resumed if not paused
     REQUEST_REJECT_REASON_HEPARIN_VOLUME_EXCEEDS_10_ML = 52,                        ///< Heparin volume needed for treatment exceeds 10 mL maximum.
+    REQUEST_REJECT_REASON_INVALID_PAYLOAD_LENGTH = 53,                              ///< Invalid message payload length
     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