When I use the a4j:support in one combobox I lost all my other field's value. So I put a process="id1,id2" and now it's working but when I change the value (onchange) of mine combobox he validate all other fields and the fields that are required="true" create an error. (required error).

I would like to change the value from my combobox (ajax) with else validate the requirement of the other fields.

Thanks by suggestions;