Yes it is validated, but it is not as thoroughly validated as an offline schema validation tool. This is mainly because of the large performance overhead that is introduced. Currently we don't have an option to use a strict validator, although feel free to create a feature request for it. You could also implement this yourself using a handler that calls out to JAXP. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4000720#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...