Go to Promo Coupon Page (https://www.dominos.co.id/promo-kupon) on Website or Go to Home fo Domino's app and find "Use Coupon" on the bottom.2. Enter your code on the following box (i.e: MIRA123) and click Submit.3. If the submit succeeded, it will be directed to the Coupon Code's Landing Page and ready to add your pizza to the cart.