"Marx3" wrote : so if there will not be required=true for example on email field (but @Email will be defined on column in @Entity bean) validateAll will not validate and there will be persistance exception? | Is this bug or by design? It makes s:validateAll rather useless... JSF doesn't attempt to validate fields which are empty. Hence trying to validate with @NotNull doesn't work. So, in your example, if you had (with person.email being annotated with @Email) <h:inputText value="#{person.email}" /> then, if you didn't enter a value, validation would pass, if you entered an invalid email address it would fail, if you entered a valid email address it would pass. If you added required="true" you would have to enter a value. Seam can't fix this, a new JSF would be needed. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4120007#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...