title: Assets.car can't contain 16-bit or P3 assets if the app supports iOS 8 or earlier?
body: <p>Has anyone come across this error when uploading to iTunesConnect. Upload precess gets to "Verifying assets with iTunes store" the I get the following error:</p>
  
  <p><a href="https://i.stack.imgur.com/tnFAQ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/tnFAQ.png" alt="enter image description here"></a></p>
  
  <p>I am working with xCode8, embedding a custom sticker app within an existing iOS application. I have temporarily removed sticker assets and included apple sample message icons to test if it was my sticker assets that were causing the issue, however when validating I receive the same error. Any thoughts? </p>