> 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/troubleshooting-and-support/common-questions.md).

# Common questions

Answers about scanning, Post, and the QR code on the pick instruction.

## The scan does not find the item

Check the **GTIN** on the item. The app searches only by GTIN, not by item number. The item must also be an item line on this sales order.

## Post did not post anything

That is expected. **Post** only fills **Qty. to Ship** and **Qty. to Invoice**. Post the shipment and invoice on the sales order.

## Qty. to Ship is empty or too high

**Post** first sets quantity to ship and quantity to invoice on the order to 0, then writes the picked quantity. Anything that was open before and is not in the picking lines is no longer open.

## The QR code on the report is empty

The code is built from the GTIN. Enter the GTIN on the item and print the pick instruction again.

## QR Picking is missing on the order

The action is on the sales order, not on a quote, posted shipment, or invoice. Check that **Picking Instruction QR Code** is installed in the environment.


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