Bring the weekend that looks odd. We split the receipts into sales inside the three member cities and sales outside them. The tax collected on each pile is recomputed from the pieces, not from the total the register happened to print.
If the register collected too little, the business still owes the difference. Collecting the wrong amount from the customer does not shrink the amount the return has to report. If the register collected too much, the extra is not revenue. It is money that has to be tracked until it is repaid or reported the way the instructions say.
The monthly close is where this gets caught, not at the franchise report in May. A half percent on a year of sales is large enough to matter and small enough to hide inside a payout fee. The month of the sale is the cheapest month to catch it.
The two invoices page is the companion to this one. A shop ticket and a card payout can disagree because of the half, because of a fee, or because of both. Read them as separate problems that sometimes share a weekend.
If one check stays in your head, let it be the member list. Denton, Highland Village, and Lewisville pay the transit half. The rest of the county does not pay it merely by sharing the county name. A register that asks which city the sale was in will save more tax trouble than a register that asks nothing and reuses yesterday's code.