'How to implement In app Update for Android production bundle in Play Store

I have implemented In App Update in my app, its working fine in on both apk and bundle in Internal Testing but its not working when I Upload the production bundle in playstore, I do many scenarios in Internal testing and its working in all but not in live production bundle.



Solution 1:[1]

If it works in internal app sharing but not production could be similar to this post where it turns out google app signing for production or test tracks means your app has a different signature and won't register an update.

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Source: Stack Overflow

Solution Source
Solution 1 Dr Michael J Gibson