I am working on an ECC6 Ehp8-system (backend) with a frontend (Gateway, Fiori) and after implementing a transactional app which is delivered by SAP I get in the app a message “error while saving the request: wrong assignment data” (/IWEP/CM_MGW_RT022).
In /IWBEP/ERROR_LOG I can find this message /IWEP/CM_MGW_RT022. Following I’ve checked so far:
There seems to be no auth. error in SU53 in backend/frontend. There’s no shortdump in backend/frontend. I didn't find an appropriate OSS note.
Could somebody please give me some hints how to solve that?