title: App installation failed due to application-identifier entitlement
body: <p>I am unable to install a watchOS 2 WatchKit app due to an application-identifier entitlement. This happened after turning on App Groups in the Capabilities tab.</p>
  <p>Full error:</p>
  <blockquote>
  <p><strong>App installation failed</strong></p>
  <p>This application's application-identifier entitlement does not match that of the installed application. These values must match for an upgrade to be allowed.</p>
  </blockquote>
  <p><a href="https://i.stack.imgur.com/tHqUy.png" rel="noreferrer"><img src="https://i.stack.imgur.com/tHqUy.png" alt="Screenshot 1" /></a></p>
  <p>This is running the app in debug mode on a physical device. Running just the iOS app works fine.</p>
  <p>I have turned App Groups off again and removed the entitlements files that were added, but same error.</p>