---
id: "tester-or-damaged"
lang: "en"
title: "Mark tester or damaged"
summary: "Take units off stock that were opened as testers or are too damaged to sell. Stock drops at once and no money moves."
area: "Stock & products"
kind: "task"
url: "https://zeropos.shop/help/tester-or-damaged"
alternate: "https://zeropos.shop/help/tester-or-damaged?lang=es"
markdown: "https://zeropos.shop/help/md/en/tester-or-damaged.md"
screens: ["/pos/product-event"]
where_to_find: ["Quick actions › Mark tester or damaged"]
related: ["adjust-stock","refund-a-sale","stock-take","products-and-stock"]
updated: "2026-10-12"
---

# Mark tester or damaged

Take units off stock that were opened as testers or are too damaged to sell. Stock drops at once and no money moves.

Use this when stock leaves the shelf without a sale: a tester opened for customers to try, or a product that arrived broken.

Not for a customer bringing something back: that is [Refund a sale](https://zeropos.shop/help/refund-a-sale). To fix a miscount, use [Correct stock by hand (Stock adjust)](https://zeropos.shop/help/adjust-stock).

Where to find it: Quick actions › Mark tester or damaged.

## Steps

1. Open [Quick actions › Mark tester or damaged](https://app.zeropos.shop/pos/product-event) and check that **Location** is your shop.
2. Choose **Tester** for items opened for customers to try, or **Defective** for stock that can't be sold.
3. Search by name or SKU and tap + on each product, or tap **Scan barcode** and scan it. Each joins **Selected items** and stays there while you search for the next.
4. Set the quantity on each line.
5. Add a **Note** so everyone knows why later, for example an in-store demo or damaged on arrival.
6. Tap **Record tester** or **Record defective**, then **Confirm**.

## What happens next

- The quantities leave that shop's stock at once and are logged in each product's history.
- No money moves: nothing is charged or refunded, and the day's takings don't change.
- Testers and write-offs show in the **Stock Movements** report ([INSIGHTS › Reports](https://app.zeropos.shop/reports/data/movements)), so you can see what was lost and why.

## If you see this

- “**Product not found**” — What to do: The scanned code matches no product's **Barcode** or **SKU**. Search by name instead, or check the product's form in [Products and stock](https://zeropos.shop/help/products-and-stock).
- “**Scan failed — try again**” — What to do: The screen couldn't reach Zero POS. Check the connection, tap **Scan barcode** and scan again, or type the name in the search box.

## Good to know

- There is no undo. If you record the wrong quantity, put it right with [Correct stock by hand (Stock adjust)](https://zeropos.shop/help/adjust-stock) and a note saying why.
- Record testers as soon as you open them, so the shelf count stays right for the next [Blind stock-take: count your shop's stock](https://zeropos.shop/help/stock-take).

## Related guides

- [Correct stock by hand (Stock adjust)](https://zeropos.shop/help/md/en/adjust-stock.md)
- [Refund a sale](https://zeropos.shop/help/md/en/refund-a-sale.md)
- [Blind stock-take: count your shop's stock](https://zeropos.shop/help/md/en/stock-take.md)
- [Products and stock](https://zeropos.shop/help/md/en/products-and-stock.md)