You can't have associations to the root class if it's just a MappedSuperClass -- it has to be an entity. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4109493#4109493 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4109493