Thanks. Jaikiran. If you refresh your ejb3 checkout, you'll find that there is a new ejb3 module added -- proxy-clustered. The classes in this module are mostly extensions of the ones in proxy that add the behavior necessary for cluster-aware proxies. Since these classes are extensions, there's a fair amount of overriding of protected methods, including some methods you're probably changing (e.g. JndiSessionRegistrarBase.createJndiReferenceBindingSet(...)). So, you're patch will need to include changes to proxy-clustered as well. AIUI, you're mostly working on passing an InvokableContext param instead of a bunch of details. The changes to proxy-clustered needed to handle that should be simple and pretty obvious. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4172143#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...