title: Azure Active directory Add Assignment button greyed out
body: <p>I have an active directory application that is used as a service principle in DevOps pipelines. I need to assign <strong>Directory Reader</strong> role to this application. I am a Global Administrator, as shown in the picture below.</p>
  
  <p><a href="https://i.stack.imgur.com/ooMIX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ooMIX.png" alt="Image showing my role"></a></p>
  
  <p>When I try to assign a Directory reader role to the service user, the role assignment button is disabled as shown below. 
  <a href="https://i.stack.imgur.com/DCvx7.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DCvx7.png" alt="PIcture showing role assignment button"></a></p>
  
  <p>Is Global admin permission is not sufficient for this purpose or am I missing something here? </p>