Apple server notification :
URL : https://qonversion.io/blog/apples-2021-updates-to-managing-in-app-purchases-from-the-server/

URL (Apple Notification type ) : 
Excel status Mapping == >> https://developer.apple.com/documentation/appstoreservernotifications/notification_type
https://developer.apple.com/documentation/appstoreservernotifications/jwstransactiondecodedpayload


Apple has announced on WWDC 2021 that they’re planning to add an appAccountToken field to transaction info. It will contain the user’s identifier in your system. This identifier must be in the ​​UUID format and is defined on the app side when the purchase gets initialized. If defined, it will be returned in all transactions of this chain (subscription renewals, billing issues, etc.), which means it’ll be easy for you to understand which user made the purchase
https://qonversion.io/blog/what-is-storekit-2-and-what-are-its-new-features/
response parameters : https://developer.apple.com/documentation/appstoreservernotifications/responsebodyv2decodedpayload
appAccountToken : https://qonversion.io/blog/what-is-storekit-2-and-what-are-its-new-features/

Video Reference : https://developer.apple.com/videos/play/wwdc2021/10174
------------------------------------------------------------------------------------Google
Main google link : https://developer.android.com/google/play/billing/rtdn-reference



