> ## Documentation Index
> Fetch the complete documentation index at: https://docs.qtap.qa/llms.txt
> Use this file to discover all available pages before exploring further.
# Setting QR code expiry dates and scan limits
> Make a QR code stop working after a date or after a set number of scans, for limited-time or limited-quantity promotions.
Most QR codes you generate are meant to last. A code taped to the counter should keep adding stamps for as long as it hangs there. Sometimes you want the opposite: a weekend promotion that stops on Monday, or a giveaway that closes once the first 50 customers have scanned. Two settings on the Generate QR Code page cover both.
Go to **QR Codes** in the left sidebar and choose **Generate QR Code**. Fill in the name and action as usual, then open the **Advanced Settings** card.
## Limit how many times a code can be scanned
**Maximum Scans** caps the total scans a code will accept. Leave it empty and the code stays unlimited. Type a number, say 50, and the code stops working once 50 scans have gone through.
This field shows for **Reusable** and **Batch** codes. A **One-Time Use** code already switches itself off after a single scan, so it has no scan-limit field. Batch codes behave the same way per code, with each one good for a single scan.
## Make a code expire on a date
Turn on the **Expiry Date** switch and pick a day and time. After that moment the code stops working, whatever its scan count. Leave the switch off and the code never expires.
Expiry works for every code type, so you can pair it with a scan limit. A code that has both stops at whichever one it reaches first.
## What a customer sees when a code is used up
A scan against a finished code fails before any stamp or points are awarded, and the customer's phone shows the reason.
| Why it stopped | Message on the phone |
| -------------------- | ------------------------------------------------------- |
| Past its expiry date | "This QR code has expired." |
| Hit its scan limit | "This QR code has reached its maximum number of scans." |
An expired or maxed-out code can't be brought back. Generate a fresh one for the same location and reprint it. The [troubleshooting guide](/merchants/qr-codes/troubleshooting) covers how to read a code's status when a scan fails.
You set the expiry date and scan limit when you generate a code, and you can't change them afterward. A code's detail page lets you edit its name, location, and on/off switch, but not its limit. To change a limit, switch the old code off and generate a new one. To stop a code early, use **Deactivate** on its row.
## Who can set these
Generating codes is open to owners and managers by default. Staff don't see the QR Codes page unless you grant them access on their [role and permissions](/merchants/staff/roles-permissions).