Is it just since 1.2.1.GA that the entity has to be Seam managed? It could be an explanation for my problem. Fortunately since I tried to update to Seam 2 and then went back to 1.2.1 the problem has gone. But I'm still interested in recovering the reason. Therefore could you please tell me what steps are necessary to assure that those entities are Seam managed? And does this only refer to the entities which are in the list itself or also to the component which provides the list (which should be Seam managed since it's a component, isn't it?)? Thanks in advance Newlukai View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4071443#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...