Hi! I'm using seam with pojos and SMPC | <core:managed-persistence-context auto-create="true" | entity-manager-factory="#{BtsEntityManagerFactory}" | name="entityManager" /> | | <core:entity-manager-factory name="BtsEntityManagerFactory" | persistence-unit-name="Bts" /> | I also configured seam transaction phase listener. On each request i got this warning several times: WARN [AbstractEntityManagerImpl] Cannot join transaction, not a JoinableCMTTransaction Idea where is the problem? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4075851#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...