<a class="reference external image-reference" href="https://www.gnu.org/licenses/agpl"><img alt="License: AGPL-3" src="https://img.shields.io/badge/license-AGPL--3-blue.png" /></a> <a name="supplier-invoice-number"></a> <h2>Supplier invoice number</h2> <p>This module adds the 'Supplier Invoice Number' field to a supplier invoice.</p> <p>This module is a prerequisite for other modules adding extra functionality such as</p> <ul class="simple"> <li>supplier invoices with structured communications</li> <li>supplier invoice duplicate checking</li> </ul> <a name="known-issues-roadmap"></a> <h3>Known issues / Roadmap</h3> <ul class="simple"> <li>Align this module with the OCA 'account_invoice_supplier_ref_unique' module.</li> </ul>