title: Use MS Graph API and Postman to call Teams, Unsupported AAD Identity
body: <p>I tried to create a call in Teams trough Microsoft Graph Api. I created a  App with the given permissions but when i try to do the POST on: <code>https://graph.microsoft.com/v1.0/communications/calls</code> i get this error:</p>
  <pre class="lang-json prettyprint-override"><code>    {
          &quot;error&quot;: {
              &quot;code&quot;: &quot;UnknownError&quot;,
              &quot;message&quot;: &quot;{\&quot;errorCode\&quot;:\&quot;7500\&quot;,\&quot;message\&quot;:\&quot;Unsupported AAD Identity.\&quot;,\&quot;instanceAnnotations\&quot;:[]}&quot;,
              &quot;innerError&quot;: {
                  &quot;date&quot;: &quot;2020-11-11T14:38:43&quot;,
                  &quot;request-id&quot;: &quot;74ee843f-ba7e-4d87-b1e2-617c6fdce77c&quot;,
                  &quot;client-request-id&quot;: &quot;74ee843f-ba7e-4d87-b1e2-617c6fdce77c&quot;
              }
          }
      }
  </code></pre>
  <p>Token and everything looks good. If I change the token I get another error that this one is wrong.</p>
  <p>To be honest my knowledge about Azure etc. is very low.</p>