Third Party (RFC) --> XI --> R/3 (RFC)

Dear all,

We are going to connect a non-SAP system with RFC to XI.

The problem is that the thrid party system sends its RFC calls to the ABAP-stack instead of to the RFC-sender-adapter. Of course the function modules do not exist in XI but only in the target R/3.

I tested the scenario with the help of another system (R/3), here the RFC-calls work properly and get successfully through Integration Engine and I get the answer back from the target system.

Does somebody know why the third party system sends its RFC-calls to the ABAP-stack? In RFC sender channel I enabled "Advanced mode" and disabled "Verify sender system".

Thanks a lot and best regards,

philipp