"christian.bauer(a)jboss.com" wrote : That would mean JAXB is not JavaBeans compliant. It's either properties (with getter and setter methods) or fields, not both. I didn't spend a lot of time delving into it, but that's definitely what was happening in my class. I just now made up a very simple test class and didn't see that problem. So I'm not sure what was causing that, but when I used _name for the private members, things started working. Who knows. This class had static inner classes for various things, so maybe that's related. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3998865#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...