An application for admission is not a registration form. Each trimester, the student must sign the registration form available at his department, and if need be, make the appropriate course selections.
Only the letter of admission issued by the Bureau du registraire is the official and valid proof of admission. Letters from faculties, departments or professors are not proof of admission. In addition, only official letters of admission are accepted by the Canadian and Québec authorities for customs and immigration procedures in Canada.