Build not visible in itunes connect

The build is not visible until the "Processing" step is in progress in the "Prerelease" tab. It should depends on the size of your app. For a 10Mb app of mine, it took about 5 min.

Check your inbox for an email from iTunes Store:

Subject: iTunes Connect: Your app [...] has one or more issues

Dear developer,

We have discovered one or more issues with your recent delivery for[your app]. To process your delivery, thefollowing issues must be corrected:

This app attempts to access privacy-sensitive data without a usagedescription. The app's Info.plist must contain anNSPhotoLibraryUsageDescription key with a string value explaining tothe user how the app uses this data.

[...]

Once the required corrections have been made, you can then redeliverthe corrected binary.

Regards,

The App Store team

Xcode 8 told me the upload was successful, but the build did not appear in iTunes Connect until I fixed the issues indicated in the email and resubmitted.

May be helpful:

1. While pushing build to ITunes, i minimize organzier window, so in background everything went smoothly and message got display "Build pushed successfully".
2. But build do not got display in itunes store and sometime build get display in "Processing" step but do not get to "Versions".
3. I repeated step 1 and 2 but same result.
4. Then i pushed build with Organizer window (in Foreground) not Minimised and everything worked. (It takes some time according to size as @cdescours pointed)
5. This experiment was conducted on dated 30, Oct, 2014 throughout day & also same issue was discovered later too. Hence we can conclude iTunes have the issue when the build is pushed in background.