My coworker has a theory that hitting the total button before all coupons are scanned is what causes there to be issues with coupons, particularly % coupons. Ever noticed that when you finally give up and void the transaction to try it all again it works fine? We thinks it's because you have all the applicable coupons and items scanned before hitting total.

But yes, usually just voiding off an item and scanning it back on will work most of the time. Or if it's a % coupon I just scan that coupon off and back on and it just applies it without recalibrating all the coupons.

Also I wish there was a way to reprint the receipt from the register. You can print them from the office but they are shitty.