# How does Briefcase extract Purchase Order numbers?

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How does Briefcase extract Purchase Order numbers?. Briefcase can detect and extract Purchase Order (PO) numbers directly from invoices when they are.

Briefcase can **detect and extract** Purchase Order (PO) numbers directly from invoices when they are uploaded.

The PO number is then **appended to the reference field,** so that they can be searched for in your Xero / Quickbooks account.

The feature can be turned on for each client in their Business Settings.

![Screenshot 2025-09-22 at 01.16.31.png](https://kb-assets.briefcase.so/support-kb/7309157592/0-1758500215215-Screenshot2025-09-22at01.16.31.png "Screenshot 2025-09-22 at 01.16.31.png")