I'd need to double check what was available in AS 4.2.2, I think the -t 2.1 option was later disabled because the implementation of JAX-WS 2.1 was not complete yet. For sure you can use the 2.1 target starting from JBossWS Native 3.1.0.GA as the JAX-WS 2.1 has been completed there. Otherwise (if you cant move to AS 4.2.3 which is the oldest target container supported by JBossWS 3.1.0) try with JBossWS-Metro 3.0.5, which already had full JAX-WS 2.1 impl. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4227423#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...