title: "Unexpected Machine Code" warning from iTunes Connect
body: <p>After I uploaded my build to iTunes Connect by using Application Loader, I got an email about an issue "Unexpected Machine Code" see below.</p>
  
  <blockquote>
    <p>Unexpected Machine Code - Your upload contains both bitcode and native
    machine code. When you provide bitcode, it's not necessary to include
    machine code as well. To reduce the size of your upload, use Xcode 7.3
    or later, or any other toolchain that removes machine code.</p>
  </blockquote>
  
  <p>I am so confused about this warning. Is this a new thing in iTunes Connect? Why it doesn't give me the warning when I upload QA build but Release build?</p>
  
  <p>Update: I upload QA build last week, it wasn't any warning. And today (June 27th 2016) I upload Release build, it send me the warning.</p>