I think the current implementation works well in the sense that there is not a specific interface for the properties associated with a message (i.e - no getMessageId() or getMessageCreateDate() on the Message interface itself). I added the org.jboss.soa.esb.message.properties.MessagePropertyFacade class as a wrapper for messages so that there would be consistent property naming and typing without restricting the Message interface. Does that sound like a good way to handle it? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4037682#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...