I found out that the problem is in the wsdl at line 18. <message name="CustomersSessionBean_HelloWorldResponse"> | <part name="result" element="s0:HelloWorldResponse" /> | </message> The error is the "name" attribute. It should be called "parameters". <message name="CustomersSessionBean_HelloWorldResponse"> | <part name="parameters" element="s0:HelloWorldResponse" /> | </message> My new question is: How can i change that behaviour on JBOSS? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3968076#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...