Ok, the issue is now on JIRA; http://jira.jboss.com/jira/browse/JBWS-1154. I'm guessing that you don't have an issue with it because you write code that responds to the messages you know the service will return. Instead of writing code from the WSDL. The WSDL describes the input to this service as so sending a message in <Calculator_add> tags should invoke it. However JBossWS expects tags. Similarly the service should respond with <Calculator_addResponse> tags but it actually responds with tags. Regards Doug View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3968342#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...