With updated new iTunesConnect for Apple Developers comes with many features one which is prerelease or TestFlights for External Testers. It allows App Developer to distribute it’s unreleased app to selected beta testers so that developer can get reviews & bug reports from them. One of this feature is that you can upload multiple copies of same app to iTunesConnect i.e. ITC.
When you try to do that you get following error
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