I assume you meant "What version of JBoss Messaging is compatible with JBoss AS 4.2?". On that case your answer is JBoss Messaging 1.3.0.GA. (And 1.4.0.CR1 which will be released soon). Previous versions of JBoss Messaging had some problems with scoping on JBAS 4.2. If this is not what you meant in your questio... please reformulate. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4063000#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...