write your own custom validator . Write your custom JSF componet wrapping HTMLFORM JSF componet . Get your validation componet by using componet.findchildren recusrively to get your validation compont . Do your validation at decode request value phase of your component .Add JSF error if there are validation errors . those errors will be shown at render response phase of jsf life cycle. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4002256#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...