TPM iFlow stripping SenderBusinessSystem from Message Header

[MartyMcCormick]

Hello

I've configured TPM AS2->SOAP agreement in TPM.  The mapping works fine except that the "Assemble Interchange" step is stripping out the SenderBusinessSystem field from the MessageHeader, and this is required for the OrderRequest sales order API.  In trace mode, I can see the field before the step and removed after the xslt ASSEMBLE_XSLT is applied to the payload.  Unfortunately this step is also after the custom process.  Any idea what I'm doing wrong or how to fix this?  The payload requires SenderBusinessSystem, so the API call fails to S/4HC.

MessageHeader now has Receiver and Sender Business System fields removed after the Assemble Interchange step:

Thanks,
Marty

[MartyMcCormick · Accepted solution]

I was able to resolve this issue on my own.

[flmerkel · Accepted solution]

Hallo Marty, what did you do to resolve this issue?