Come on, is there realy no one who can help me? I think it must be possible by deleting the Membership on the Database with this: "delete from org.jbpm.identity.Membership as m where m.id = ?1 " and delete the Membership from the User and Group Object in JBPM ... BUT I can't remove a Membership from a User the Group Objects have | .setMemberships( memberships ); | but the User Objects has only .addMembership( ... ) ------ I didn'T find a way :( View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4027478#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...