> For the complete documentation index, see [llms.txt](https://docs.solutioo.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.solutioo.de/qr-picking/qr-picking-en/picking/scan-a-gtin.md).

# Scan a GTIN

Add each item to the picking lines by scanning its GTIN.

Add a line in **Picking Lines** and scan into **GTIN**. The field accepts a barcode.

{% stepper %}
{% step %}

### The item is recognized

The GTIN must be stored on the item, and the item must be an item line on this order. The line fills in the item number, description, ordered quantity, quantity already shipped, and location. **Picked Qty.** is set to 1. The time and the user are stored.
{% endstep %}

{% step %}

### Scan the next item or the next unit

Each scan creates a line with quantity 1. To pick two units, scan the GTIN twice.
{% endstep %}
{% endstepper %}

{% hint style="warning" %}
These messages come from the app:

* **GTIN is required.** Nothing was scanned.
* **Item not found.** No item has this GTIN.
* **Item not found in the sales order.** The item is not on the order.
* **Item is already shipped.** The line is already fully shipped.
* **Item is already picked.** The open picked quantity already matches the quantity to ship.
  {% endhint %}


---

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