Hi R.J.,
From the looks of it you've configured this as a reliable interface. We can see the WS-Adressing headers in the SOAP header, which is used when you configure SAP-RM in SOAMANAGER. Change your proxy definition to use asynchronous, and not reliable like this:
After that, reconfigure in SOAMANAGER. That will suppress the WS-A headers.
kr,
Peter