> For the complete documentation index, see [llms.txt](https://docs.p4.software/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.p4.software/p4warehouse-english/setup/system-configuration/receiving/data-entry.md).

# Data Entry

P4 Warehouse Receiving Data Entry

This screen allows the configuration for receiving.

* Po Number Prefix: this is the prefix for Purchase Orders, PO- is a standard prefix.
* Duplicate Sku Behaviour
  * Allow: you can have the same SKU on the purchase order more than once.
  * Prompt: warns the user that the sku is already on the order however allows the user to add the sku multiple times.
  * Prevent: does not allow the user to add a duplicate sku to the purchase order. 

{% hint style="success" %}
Prevent is the most common setting.
{% endhint %}

![](https://2764542787-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MdqvtgkbuySRnxUkZY_%2F-MjZ2chNdUQ2QdH8d9uD%2F-MjZ9y5AaujCDsggaw3K%2Fimage.png?alt=media\&token=b8834da7-5b74-4718-97f0-ca85652a786e)