PS: if you want to run testsuites (of your projects, not xb) with latest XB then probably you should set system property xb.builder.useUnorderedSequence to true or invoke JBossXBBuilder.setUseUnorderedSequence(true) to not enforce element ordering in sequences. But actually, if there are xml/binding validation issues they should be resolved, there have to be a good reason to use unordered sequences. Please, post on xb forum any issues you find. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4215642#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...