Go ahead and select Validate in the last screen you were in with Xcode, which should result in this Summary screen:
Click on the Validate button. Let it do its work in communicating with iTunes Connect and, if everything checks out, you'll receive a Validation Successful prompt. If this is the case, hit Done and let's begin uploading our app.
Pressing the Upload to App Store button, you will be prompted with a similar request to choose your Development Team and then press Upload:
At this point, the archive of your ...