<p>I'm applying to LIU on the Common Application - and the only way to pay through the CommonApp is with a fee waiver. So I go on the LIU website, and it says that I have to pay by mail. But when I send it by mail, how will the common app recognize it and how will LIU know I am applying on the CommonApp? (because on the mail form it has a spot for Application Confirmation Number - but I assume that's for applying on LIU's website - not through the Common App) Help?</p>