I was using @Render, I'll try using @Redirect instead. I'm guessing @Render would've been preferrable so that the error appears on the same page rather than (like a FacesMessage from an invalid field) Why do @Render (only in INVOKE_APPLICATION) and @Redirect (not in RENDER_RESPONSE) not work at any time in the request lifecycle? Can't redirects and forwards happen at any time? (I'm sure there's a good reason, maybe someone could explain.) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4006438#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...