XML schema can contain multiple top-level/root elements. The corresponding classes have to be annotated with @XmlRootElement. The problem is at the moment JBossXBBuilder (which is a SchemaBinding producer) takes only one class (which may reference other classes annotated with @XmlRootElement). Until support for binding a set of classes to the same SchemaBinding is supported, there could be a few workarounds/hacks: - just introduce an artificial class (which doesn't have to have a representation in the xsd) that would reference your top-level classes; - build separate SchemaBinding's for datasources and connection-factories and then merge them into one. The first one should be easier. Adding support for that to JBossXBBuilder should not be a problem as well. I am not sure whether JAXB defines a standard way to do that. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4200046#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...