rence" href="https://runboat.odoo-community.org/builds?repo=OCA/purchase-workflow&amp;target_branch=18.0"><img alt="Try me on Runboat" src="https://img.shields.io/badge/runboat-Try%20me-875A7B.png" /></a></p>
<p>This module extends the functionality of Purchase Requests to support a
tier validation process.</p>
<p><strong>Table of contents</strong></p>
<div class="contents local topic" id="contents">
<ul class="simple">
<li><a class="reference internal" href="#installation" id="toc-entry-1">Installation</a>