title: Unable to install some apps from Google Play on customized AOSP: Item is not available. Reason: 9
body: <p>I'm getting the following error when trying to install some apps from Google Play:</p>
  
  <pre><code>LibraryUtils.isAvailable: not available restriction=9 
  DocUtils.getAvailabilityRestrictionResourceId: Item is not available. Reason: 9
  </code></pre>
  
  <p>I'm running a customized version of AOSP (a customized Android x86 flavor) on x86 hardware. I've researched a lot and there are lots of vague attempts/guesses at answers already on the net but I'm specifically looking for what "Reason 9" refers to. Once I have that, I'm hoping I can come up with a hack in AOSP to avoid the error as when I sideload the same apps they run fine. This is hobby I'm doing so I'm not worried about some possible unintended side effects. </p>