Thinking about this further some refactoring is going to be required so that the generation of the return type and the generation of the parameters happens together as either of these can affect the decision as to if unwrapping should occur. (I can currently fall back to not unwrapping the return type or parameters independently but not both together). The current fix for JBWS-1260 contains a lot of scenarios that users are currently experiencing problems with that should be working. I will get JBWS-1260 finished to just include the scenarios that we should be unwrapping and throw an exception for the scenarios that are not supported. I will raise a feature request to cover falling back to not unwrapping if it is not possible to unwrap the message parts. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3995019#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...