Indicates that either Apple customer support canceled the auto-renewable subscription or the user upgraded their auto-renewable subscription. The InAppPurchaseTransaction.cancellation_date key contains the date and time of the change.
Indicates that the customer made a change in their subscription plan that takes effect at the next renewal. The currently active plan isn’t affected.
Indicates a change in the subscription renewal status. In the JSON response, check ServerNotificationResponseBody.auto_renew_status_change_date_ms to know the date and time of the last status update. Check PendingRenewalInfo.auto_renew_status to know the current renewal status.
Indicates a subscription that failed to renew due to a billing issue. Check PendingRenewalInfo.is_in_billing_retry_period to know the current retry status of the subscription. Check PendingRenewalInfo.grace_period_expires_date to know the new service expiration date if the subscription is in a billing grace period.
Indicates a successful automatic renewal of an expired subscription that failed to renew in the past. Check InAppPurchaseTransaction.expires_date to determine the next renewal date and time.
Indicates that a customer’s subscription has successfully auto-renewed for a new transaction period.
Occurs at the user’s initial purchase of the subscription. Store UnifiedReceipt.latest_receipt on your server as a token to verifyReceipt the user’s subscription status at any time by validating it with the App Store.
Indicates the customer renewed a subscription interactively, either by using your app’s interface, or on the App Store in the account’s Subscriptions settings. Make service available immediately.
Indicates that App Store has started asking the customer to consent to your app’s subscription price increase. In the UnifiedReceipt.pending_renewal_info object, the PendingRenewalInfo.price_consent_status value is 0, indicating that App Store is asking for the customer’s consent, and hasn't received it. The subscription won’t auto-renew unless the user agrees to the new price. When the customer agrees to the price increase, the system sets PendingRenewalInfo.price_consent_status to 1. Check the receipt using verifyReceipt to view the updated price-consent status.
Indicates that App Store successfully refunded a transaction for a consumable or non-consumable in-app purchase. The InAppPurchaseTransaction.cancellation_date_ms contains the timestamp of the refunded transaction. The InAppPurchaseTransaction.original_transaction_id and product_id identify the original transaction and product. The InAppPurchaseTransaction.cancellation_reason contains the reason.
Indicates successful automatic renewal of an expired subscription that failed to renew in the past. Check InAppPurchaseTransaction.expires_date to determine the next renewal date and time.
Update your existing code to rely on the DID_RECOVER notification type instead.
As of March 10, 2021 this notification is no longer sent in production and sandbox environments.
Indicates that an in-app purchase the user was entitled to through Family Sharing is no longer available through sharing.
The type that describes the in-app purchase event for which the App Store sent the notification.
Link
https://developer.apple.com/documentation/appstoreservernotifications/notification_type