AppTransactionId support in Get Transaction Info endpoint — documentation change and actual behavior?

Hello,

I have a question regarding the App Store Server API's getTransactionInfo endpoint.

Previously, the official documentation for getTransactionInfo mentioned that:

“This endpoint doesn’t support an app transaction. To get information about an app transaction, decode the signed app transaction received from the device.”

However, as of June 2025, I can no longer find this sentence in the current documentation (link). Now, the docs state that all in-app purchase transaction IDs are supported (consumable, non-consumable, auto-renewable subscriptions, etc.).

But in practice, when I call getTransactionInfo with an AppTransactionId (extracted from a signed App Transaction JWS), I receive this error: apiErrorCode: 4000048 “Invalid request. App transactions aren’t supported by this endpoint.”

  • Is this endpoint supposed to support AppTransactionId now, or is the restriction still in place (but not mentioned in the docs)?
  • Is there any official statement about when this restriction was added/removed?
  • Can you clarify if only in-app purchase transaction IDs (and not AppTransactionIds) are supported for this endpoint, or has the policy changed recently?

Any clarification or historical context would be greatly appreciated.

Additionally, I would like to know about the behavior of an App Transaction in the event of a refund.

  • If a user receives a refund for the app itself (not an in-app purchase), how can changes to the AppTransaction be detected?
  • Does the App Store Server Notification v2 provide notifications for app-level refunds, or are such events only visible by decoding the latest App Transaction JWS on the device?
  • Is there any way to receive app-level refund information server-side, or must we always rely on the device to provide the updated signed app transaction?

Any clarification on this refund flow and notification coverage would also be appreciated.

Thank you!