First off - I'm far from a SOAP expert so apologies if I state things incorrectly or use the wrong verbiage.
We use CA Process Automation Manager (PAM) to maintain out users. On one of the processes when we are looking to see if a user can be inactivated, we occasionally get this error.
SOAP invocation failed: java.security.PrivilegedActionException: com.sun.xml.messaging.saaj.SOAPExceptionImpl: Message send failed
The method being called is QueryUser. I can drop that exact soap package in SoapUI and it works just fine. The only commonality I see on the failed soap call is they all return a "User Unknown" when I run it in SoapUI. If they return a user it appears the call doesn't fail.
The SOAP schema we are using is http://www.xmatters.com/webservices/schema#5.0