This bit sounds useful: anonymous wrote : Your component may not have been found (see another FAQ) or the errors may be hidden. The JSF lifecycle consists of a number of phases; in some of these phases errors can occur which don't cause an exception to be thrown and logged (at least at the default logging level for JBoss AS) - for example conversion errors, validation errors, model update errors. These can be viewed on the page using the <h:messages /> tag. You can also put in exception breakpoints for ConverterException and ValidatorException to get more details on why the phase errored. However, it doesn't tell you how to set up the exception breakpoints. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4035071#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...