At self-checkout last week, I had a guest who used more than 10 fake manufacturer coupons in two days on two separate transactions for cleaning supplies (I forget which brands) and they all scanned and I dumbly accepted them even though I was suspicious since their total after the coupons was ridiculously low, like $1 or $2. I told AP about it, and they said to call over GSTL and deny the coupons next time, but I'm just wondering how I should explain this to the guest. AP let me know that it's okay to tell them if they escalate the situation that the coupons all have the same barcode and cannot be accepted. Do you think that's the best way to handle the situation in your opinion?