A prescription number before payment

The customer asks: A prescription number is required before a prescription item is paid for

• Verdict: Ready, with limits (1)
• Door: Check before payment · area: Till controls and approvals › Questions and details during the sale
• Recipe: A rule checked before payment (a check before payment)
• Sample: S18 — Members-only rule guard (a check before payment)
• Checked: carried 2026-10-15 · not re-run

What you build

Your service answers the check before payment and refuses the sale, with your sentence, while a prescription line has no prescription number.

Limits

• Answered when the cashier presses Pay, not when the line is entered.

Tell the customer

A sale with a prescription item cannot be paid until its prescription number is recorded.

What next

1. Tell the customer the 1 limit above, and write it into the proposal.
2. Follow the recipe: A rule checked before payment (a check before payment).
3. Copy the sample: S18 — Members-only rule guard (a check before payment), and change it.
4. Build and test it on your sandbox (request one if you have none; what is on it).
5. Run the checks: your own tests, the kit's checks and the money kit's release gate (testing and release).
6. Release through the customer's own release gate (14. Testing and release); an app other shops install goes through the App library.

Test it with your service stopped: the till applies the answer you declared for when it is down.

Related needs

• A coupon or a loyalty points balance pays no more than part of the sale — Ready, with limits (1)
• No more than a set number of lines on one sale — Ready, with limits (1)
• No store credit for a walk-in customer, no on-account for a cash customer, and methods that may not be combined — Ready, with limits (2)
• A coded reason when a cashier voids, returns or discounts — Ready, with limits (3)

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