"kabir.khan(a)jboss.com" wrote : Maybe the way I did redefine in bean-deployer_2_0.xsd is wrong as well? Having set breakpoints similar to the ones in shown stack trace they do not get called, so I guess no validation is done of the schema when using jaxb? Not unless you enable schema validation. For the rest, you need to speak to Alex about what the ScheamResolver is doing (i.e. caching by namespace uri instead of the schema location when it is available). There's already a thread on a similar issue from about a year ago. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4135931#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...