Just in case - if you are interested in supporting the legacy loader-repository config in your deployment descriptors, you could 'translate' that into the AS5 classloading metadata. So you would need to create your own ClassLoaderDeployer in POST_PARSE, which has your deployment meta data as input and as ouput the ClassLoadingMetaData. You could look at this: https://svn.jboss.org/repos/jbossas/branches/Branch_5_x/system-jmx/src/ma... and https://svn.jboss.org/repos/jbossas/branches/Branch_5_x/system-jmx/src/ma... The way this is written it first checks if there is already a classloading meta data (a jboss-classloading.xml) - if not you could create it based on the loader-repository from the esb deployment descriptor. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4228123#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...