> For the complete documentation index, see [llms.txt](https://docs.p4warehouse.com/v2/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.p4warehouse.com/v2/returns/system-configurations/data-entry.md).

# Data Entry

<figure><img src="https://4069128715-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5fCRH6psoWyRQyD8J9vh%2Fuploads%2Fd0PkgPos307b6UHIsqES%2Freturns%20system%20config%202.jpg?alt=media&amp;token=04488380-d87e-4e64-8e1b-96756ade4c19" alt=""><figcaption></figcaption></figure>

* **Customer Return Number Prefix**: allows to set customer return number prefix (Ex: RMA-).
* **Allow Custom Rma Number**: whether a custom RMA number could be entered during data entry.
* **Duplicate Sku Behaviour**: duplicate SKUs line dehaviour.&#x20;
  * Allow - allows duplicates
  * Warning - will present a prompt warning of a duplicate
  * Prevent - will error on attempt to create a duplicate

{% hint style="info" %}
Notice: Click 'Save' to implement changes.&#x20;
{% endhint %}