ICEfaces doesn't seem to need the parameter either; it appears to be a relic from integration with past versions of Seam. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4056174#4056174 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4056174