title: ITMS-90725: SDK Version Issue
body: <p>When I upload my build to testflight, I received this mail from the App store connect.</p>
  
  <p>I think If I update my Xcode to 11 it gets resolved.</p>
  
  <p>Can anyone clarify how to check the SDK version and how to update that?</p>
  
  <pre><code>  ITMS-90725: SDK Version Issue - This app was built with the iOS 12.1 SDK. 
  Starting April 2020, all iOS apps submitted to the App Store must be built with the iOS 13 SDK or later, included in Xcode 11 or later.
  
      After you’ve corrected the issues, you can upload a new binary to App Store Connect.
  </code></pre>