title: "Allow app and Book Assignment" pop up appears while trying to silently install device assignable vpp app on supervised ios devices
body: <p>"Allow app and Book Assignment" pop up appears while trying to install device assignable VPP app on supervised ios devices. It happening only for very few customers. After confirming the first message all apps get installed silently. But it re appears while trying to install again.
  XML response generated for installing VPP app is given below.
  Apps license assignment is also completed successfully before trying to install on phone. All these devices are with os version greater than 9.</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" 
  "http://www.apple.com/DTDs/PropertyList-1.0.dtd"&gt;
  &lt;plist version="1.0"&gt;
  &lt;dict&gt;
      &lt;key&gt;Command&lt;/key&gt;
      &lt;dict&gt;
          &lt;key&gt;ChangeManagementState&lt;/key&gt;
          &lt;string&gt;Managed&lt;/string&gt;
          &lt;key&gt;ManagementFlags&lt;/key&gt;
          &lt;integer&gt;1&lt;/integer&gt;
          &lt;key&gt;Options&lt;/key&gt;
          &lt;dict&gt;
              &lt;key&gt;PurchaseMethod&lt;/key&gt;
              &lt;integer&gt;1&lt;/integer&gt;
          &lt;/dict&gt;
          &lt;key&gt;RequestType&lt;/key&gt;
          &lt;string&gt;InstallApplication&lt;/string&gt;
          &lt;key&gt;iTunesStoreID&lt;/key&gt;
          &lt;integer&gt;111111111&lt;/integer&gt;
      &lt;/dict&gt;
      &lt;key&gt;CommandUUID&lt;/key&gt;
      &lt;string&gt;aaaaaaaa-ffff-aaaa-aaaa-editeduuiddd&lt;/string&gt;
  &lt;/dict&gt;
  &lt;/plist&gt;
  </code></pre>
  
  <p>I am dealing with MDM development. Please help me to figure out this odd behavior.</p>