Some things for you to try... 1. Add a setter method on your UnitPrice bean (if you can). Not sure if this is your problem. I see that you have it public, but I'm not sure how JAXB handles this normally 2. Change to using a Method config (Vs Field), just to see what happens. I've noticed JAXB do some unexplainable things that were resolved by doing this. 3. In test/parallel code, annotate your UnitPrice bean and try using JAXB directly. Find out what works and work back from there. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4073123#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...