title: Is there a limit on number of MS Graph API calls?
body: <p>I have created an App in Azure and given, as I thought, sufficient privileges.
  Now when using the Api from the App, I get occasional errors. </p>
  
  <p>For example:</p>
  
  <pre><code>https://graph.microsoft.com/v1.0/groups/xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/members?$select=id,userPrincipalName
  </code></pre>
  
  <p>gives usually the correct result, i.e. the members of the group. When I run it multiple times, however, I get:</p>
  
  <pre><code>{
    "error": {
      "code": "Authorization_RequestDenied",
      "message": "Insufficient privileges to complete the operation.",
      "innerError": {
        "request-id": "xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
        "date": "2020-04-27T07:35:43"
      }
    }
  }
  </code></pre>
  
  <p>This happens not only from the app, but using Postman with the same credentials.
  How can I have insufficient privileges, if the call has gone through multiple times already, then all of a sudden it does not. </p>
  
  <p>Is there a limit on number of MS Graph API calls? I couldn't find any informatin on this.
  Appreciate any help.</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>Thanks to everyone trying to help here. But the problem apparently was with Microsoft.
  After seeing a couple of other people having the same problem, I put it aside for a few days.
  Now revisiting my app, all the calls work fine. </p>