My understanding is the following: 1.......... wsconsume .......... 2 ........ wsprovide ...... 3 WSDL --------------------> Java --------------------> WSDL ................. top-down.......................... bottom-up Are the WSDL-files under 1 and 3 identical? Wich WSDL have you used for creating the client? One remark: The interface is not necessary for the webservice. isn't it. Second remark: The default webservice is a document-style webservice. The message sent or received by a document-style webservice are different to messages sent or received by a rpc-style webservice. Interface:...........................Echo.java Class used for a clients: .Echoservice.java Best regards! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4031796#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...