Hi , The problem was that the fmk-zentities.jar was a EJB project and not a Java Project ( POJO ) . View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4256214#4256214 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4256214