What happens if my GRE scores arrive after the deadline? There is a possibility that my GRE scores will reach the admission office 2 or 3 days after the specified deadline- Although the university will only start taking decision in April- Will my application be set as incomplete?
Ask the university. If they know your situation in advance, they will probably be able to accommodate you. Ask if you can either submit the whole application late, or if you should submit the rest of your application on time and send just the GRE score through when it arrives.