I got a simple changes like add video splash screen in my live app and released / generate a unique apk file and try to upload as a unique version 1.1. So, my all installed app users got a massage from amazon app store (Same like in google play store) that update available. But I got an error ...
Failed to upload APK. The version codes of all uploaded APKs in an app must be unique.
The APK you just uploaded with version code 1 conflicts with the version code of an existing APK in one of the previous versions.
What should i achieve so my all app installed users got a notification from amazon app store that my app has unique update available.
Thanks Regards
Source: amazon.com