Its an FAQ http://wiki.jboss.org/wiki/Wiki.jsp?page=JBWSFAQSupportedDataTypes View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3987158#3987158 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3987158