There are no big differences... The attributes are all named the same; in handcoded they're private, in generated they're protected. In the genareted classes there are the @XmlAccessorType, @XmlType and @XmlElement annotations, in handcoded not. In the handcoded classes I've added toString() methods (for logging), which aren't present in the generated classes The generated classes didn't have a setter method for lists, so I added them. That's all the differences I was able to find. But as I said before the problem only exists in JBoss, with Glassfish everything works fine, even if I use the classes generated with the JBoss wsconsume tool. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4075865#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...