Resolution:
Sometimes users call a web service using SOAP UI and BW SOAP R/R and get different results. To troubleshot the problem, you can use BW SOAP R/R to call the service and enable tracing and capture the SOAP request and response.  If BW SOAP R/R works successfully and SOAP UI fails, it may be caused by some difference in the SOAP requests. You can copy a BW SOAP request and paste it in SOAP UI to see if it works. Usually BW is more restrictive than the SOAP UI in terms of schema validation. If BW works, the SOAP UI usually works too.