Ans: This totally depends on the type of coupon you are using. If you are using a paper coupon, the store cashier will scan it to register the discount, and then either take it or mark it as used. But, if you find a coupon in two different places say, two copies of the same newspaper then both these coupons are valid. While using an online coupon, the discount is good for that purchase. If you want to return at a later date and enter the same promotional code with a different purchase, that’s OK as long as the discount code is part of an ongoing promotion.