You need Xcode 6 (or newer) or Application Loader 3 (or newer).
This information can be found directly in iTunes Connect, where you can select Build for your application. (At least he talks about it for iOS apps)
(https://developer.apple.com/library/content/qa/qa1806/_index.html) , , Xcode , - "" :
App Store , Xcode Base SDK.
, Xcode App Store, "" "", , , , App Store.