currently I'm testing some issues with calling a bapi from XI.
So my test uses the BAPI_MATERIAL_AVAILABILITY and I want to call it synchronous out of a BP. When I configure my BP send step to send the message asynchronous it works (but does not make sence). When I configure the BP to send it synchronous I always get an "INTERNAL_ERROR" back when I look at the workflow monitoring.
I tried also to put the send step within a block with "parForEach", as I read at halp.sap.com, that synchronous sends must not be to more than one receiver, but same result.
Any ideas would be great.
And once again: The asynchronous way with the same configurations in receiver determination, communication channel,... works fine.