Complete shot in the dark here, but perhaps double-check the names of the segments. Perhaps there is a hard-to-see extraneous space. Or a character that looks like another.
Screen shots showing the fields in the payload sent vs the fields in SAP (masking out any private/sensitive data) may be helpful.
Hi,
additionally you can lookup the IDoc Type in the SAP Adapter and/or create an IS DocType in Designer via SAP DocType plugin to check the names.
Regards,
Holger