JSF skip Required-Validation without immediate=true

Question

I have multiple forms, where I have mandatory fields and optional fields.

To submit such a form I require the validation on the required-attribute to be exe

Answer 1

An alternative to what others proposed is to use a custom BeanValidator that will validate the form if say, clicked the button with id save. Any other button not implicitly defined to perform validation will not validate but just submit your data available. Find the full nice and clean example here