Thanks for the info Andrew and Jonathan. I will now proceed to manually build the full JTA and XTS (1.1), as you indicated, from JBoss 4.6.0.CR1. Then, after exploding this manual build's resulting jbossxts.sar into $JBOSS_HOME/server//deploy/jbossxts.sar, I will then rebuild all of the WS-BusinessActivity Framework (i.e. both org.jboss.ba.demo and org.jboss. txbridge packages). The resulting WS-BA Framework should then be fully 1.1 compliant (I will confirm) and should work out of the box with the next EAP 5 point release (which will include XTS 1.1) Thanks again! Ben View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4223305#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...