OK, I guess you're using the JBossWS that came with JBoss 4.0.4.GA that should be something like 1.0.0.GA. That version had a first implementation of JSR181; if you're going to extensively use JAX-WS, I suggest you upgrade both JBoss and JBossWS. In the mean time, try adding the operationName and action parameter to the @WebMethod annotation and the @WebResult annotations to both methods. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4106981#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...