Index: firmware/App/Services/Messaging.h
===================================================================
diff -u -r28d515e25f5f3b2c0bbff55abd68641927b6659c -rc124da1c51c10b6b646559323db27acda273d62b
--- firmware/App/Services/Messaging.h	(.../Messaging.h)	(revision 28d515e25f5f3b2c0bbff55abd68641927b6659c)
+++ firmware/App/Services/Messaging.h	(.../Messaging.h)	(revision c124da1c51c10b6b646559323db27acda273d62b)
@@ -122,6 +122,12 @@
     U32 targetVolumeMl;        ///< Target fluid bolus volume in mL.
 } FLUID_BOLUS_RESPONSE_PAYLOAD_T;
 
+/// Payload record structure for UI response.
+typedef struct
+{
+    U32 accepted;              ///< Accepted/Rejected
+    U32 rejectionReason;        ///< Rejection reason if not accepted.
+} UI_ENDTX_RESPONSE_PAYLOAD_T;
 // ********** public function prototypes **********
 
 // Serialize message