On debugging I found that, when #{conversationEntries} is called the key coming in to Namespace.getChild(String key) is "conversationEntries" but for #{conversationList} , the key is always "org" and this is throwing the UnSupportedOperationException. Can anyone please help me with this??? Any help would be really appreciated. Thanks ! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4094287#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...