We are working on a scenario with TM-EM integration in place. Now landscape is that carriers will report gate in and gate out events from legacy system and then through the middleware , RFC call will be made and update events in TM. Now from monitoring perspective, in case there is any issue in the interface whereby legacy system confirmed sending out events but due to certain conditions messages did not reach TM system.
Now I have 2 questions since PI is not used:
a) How to reprocess the failed messages send from legacy system to SAP.
b) Secondly in the middleware platform if we add a status code as error then is there some way where using this error code, there can be some mapping with EVm messages in EM environment so that in SAP SYSTEM, we can understand the failure of messages .