When a coupon number is typed or a coupon QR Tag scanned, SambaPOS will find related coupon entity and assign it to the ticket. That will automatically create a gift order for the product associated with coupon. As ticket submitted we’ll mark coupon as Redeemed to prevent multiple uses of coupons.

We’ll also solve another security issue by updating coupon redeem status as In Ticket as soon as it scanned. So multiple scans will not generate multiple gift lines. In fact we can do the same thing by directly updating coupon status as redeemed but we want to allow operators to cancel a coupon scan before submitting it.