App Transfer's effect on Push Notifications

Question

Created Jan ’24

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I'm in the process of preparing to receive an iOS App transferred from a 3rd party developer. It's unclear from the transfer documentation whether Push Notifications will continue to work after the transfer is complete.

Could anyone provide clarity on when push notifications would begin to fail, if at all? For instance, immediately at transfer, after the first release from the new app store, or no failure until new APN tokens are created?

https://developer.apple.com/help/app-store-connect/transfer-an-app/overview-of-app-transfer/

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Answer 1

Engineer OP

Apple

Jan ’24

After a short (but non-zero) propagation delay following the completion of the transfer, the credentials of the old team (either certificates or provider tokens) will stop working, and any attempts to send pushes to the app by the old team will start failing.

To ensure a smooth transfer, the seller's push provider servers must close any open connections to APNs as soon as the transfer is completed, and the buyer's servers must start connecting to APNs using their own credentials. If the provider servers are staying the same for example, also being transferred), they will need to be reconfigured with the buyer's credentials and all connections to APNs must be reset.

To summarize - once the transfer is complete, the old team can no longer send pushes to the app regardless of version, update, or install state. The ability to send pushes depend on which team owns the App ID (Bundle ID, or apns-topic) and is unrelated to who may have published the app that is installed on devices.

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