ERROR ITMS-90158: URL schemes need to begin with an alphabetic character - Google client ID When trying to Upload to App Store... received the following error:

ERROR ITMS-90158: "The following URL schemes found in your app are not in the correct format: ... URL schemes need to begin with an alphabetic character"

The url in question is the Google client ID, that worked well before and doesn't give any error while building or validating archive however, after uploading to App Store, gives the error:


  ERROR ITMS-90158: "The following URL schemes found in your app are not
  in the correct format:
  [012345678910-kn4fsmu9sql2rtq6juun2dehji3h0pkr]. URL schemes need to
  begin with an alphabetic character, and be comprised of alphanumeric
  characters, the period, the hyphen or the plus sign only. Please see
  RFC1738 for more detail."


Using Xcode Version 7.3.1 (7D1014) and the error only started to appear recently (around Xcode 8 release date)
I found the problematic URL at: info.plist > URL schemes and reversed it myself. i.e.: com.googleusercontent.apps.xxxxxx-xxxxxxxx

then did a fresh build, all was ok