"bernhard_pauler" wrote : But do you any ideas how to circumvent this problem? Like adding a dummy return value of a different type - or using SAAJ on the server side? | I would start with functional JBossWS JAX-RPC samples (that comes with distribution) in your situation and customize them step by step :-) Richard View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4086571#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...