Yes. You can't use a set with a selectXXX according to the JSF spec (only array or list). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4071900#4071900 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4071900