# Till / Coupon Validation

Till / Coupon Validation is the screen where you **check whether a customer's coupon code is valid and then redeem it**. The cashier keeps this screen open.

> **How do I open this screen?** From the left menu, go to **Bumerang → Retail → Till / Validate Coupon**.

![Retail Till / Coupon Validation screen](https://help.useroam.com/uploads/images/gallery/2026-08/retail-kasa.png)

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## Headline figures

- **X redeemed today:** coupons redeemed at the till during the day.
- **X open coupons:** coupons generated but not yet redeemed.
- **Report:** opens the detailed coupon report.

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## The validation flow

1. Type the code into the **Coupon code** field, or scan it with a barcode reader.
2. Press **Check**. The screen shows whether the coupon is valid, its type and its condition.
3. If it is valid, **apply the discount at the till**.
4. Then press **Redeem**.

<div class="alert-box" id="bkmrk-codes-are-single-use">**Codes are single-use.** Once redeemed, the same code is never valid again. So **apply the discount first, then press Redeem** — doing it the other way round wastes the coupon if the sale is cancelled.</div>---

## Common situations

- **Code not found:** it may have been typed incorrectly; check the code on the customer's screen again.
- **Coupon expired:** the coupon's *End* date has passed (you can see it on the **Coupons &amp; Wheel** screen).
- **Already used:** the code has been processed at the till before.
- **Condition not met:** the basket total does not meet the coupon's condition.

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> **Related pages:** **Retail → Coupons &amp; Wheel** (defining coupons), **Retail Reports**, **Analytics and Reports → Audit Log** (`coupon_check` / `coupon_redeem`).