# 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 %}

![](/files/-MjZ9y5AaujCDsggaw3K)


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