title: Does Azure DevOps Server 2020 support multi layer PR approvals?
body: <p>Suppose a PR is sent that contains 2 kinds of changes:</p>
  <ul>
  <li>Some metadata updates
  <ul>
  <li>Have required reviewers</li>
  </ul>
  </li>
  <li>Business code
  <ul>
  <li>Does not have required reviewers</li>
  </ul>
  </li>
  </ul>
  <p>The problem is that if a metadata required reviewer approves the PR, it can be completed right away without waiting for the business logic reviewer.</p>
  <p>This is not good. An ideal solution would be if every piece of business code has a well defined required reviewer, but alas - it is currently not possible in our code.</p>
  <p>Is it possible to configure PR approvals so that metadata approval would not be used to complete the PR if the business logic has not been approved by anyone?</p>