> For the complete documentation index, see [llms.txt](https://support.onfact.eu/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.onfact.eu/apps-integrations/order-reference.md).

# Order Reference

## Activating Order Reference

The option to display an order reference on your documents is something that first needs to be activated in BestInvoicing:

1. Navigate to the top right corner of the screen (email address) and select 'Apps and Integrations' in the menu.
2. Check the list of 'All Apps and Integrations'.
3. Click the green button 'Activate' on the line mentioning 'Order Reference'. 

As soon as this application has been activated, it can be used immediately. 

## Mentioning an Order Reference on Documents

Once the field has been activated, it appears at the bottom of the interface window of your documents (invoices, order confirmations, delivery notes, etc.).

![](/files/iPwfKL4J8VhIwQXTKu3J)

The order reference is a free text field for manual entry. The value will be displayed at the top of your document, next to the date, document number, ... 

{% hint style="success" %}
Are you a [PEPPOL user](/more-features/send-documents-via-peppol.md)? Then specifically do use this field. 'Order Reference' is a mandatory field for sending invoices to the government. By entering this in a separate field on BestInvoicing documents, your order reference can be sent in a structured way via PEPPOL.
{% endhint %}