App Store Server Notifications

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Monitor subscription events in real time with server notifications from the App Store using App Store Server Notifications.

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Error calling Test Notification endpoint
I'm trying to call the Test Notification endpoint: https://developer.apple.com/documentation/appstoreserverapi/request_a_test_notification?language=objc I'm creating a JWT bearer token using a script I run on the console with these 2 commands: npm install jsonwebtoken fs and node generate_jwt.js Keys are taken from App Store Connect -> User and Access -> Integrations -> Keys -> In-App Purchase. generate_jwt.js script: const jwt = require('jsonwebtoken'); const fs = require('fs'); const keyId = 'MY_KEY_ID'; const issuerId = 'MY_ISSUER_ID'; const privateKey = `-----BEGIN PRIVATE KEY----- MY_SECRET_KEY -----END PRIVATE KEY-----`; // Define JWT headers and claims const token = jwt.sign({}, privateKey, { algorithm: 'ES256', expiresIn: '1h', issuer: issuerId, header: { alg: 'ES256', kid: keyId, }, audience: 'appstoreconnect-v1' }); console.log('JWT Token:', token); When I run a POST https://api.storekit.itunes.apple.com/inApps/v1/notifications/test request on postman with Bearer token authentication, I get a 401 Unauthorized error.
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Storekit2 not providing a stable experience in sandbox mode
Hello, About a month ago me and my team allocated a sprint to migrate the App Store Server Notifications service and the StoreKit library from v1 to v2. Once the implementation was completed, we started testing using the sandbox environment (which was supposed to provide greater stability and maturity in v2). The testing session went well, we managed to test various scenarios without noticing any issue (successful payment, failed payment, renewal etc). This week, before doing the production deployment, a final testing session was scheduled. Out of nowhere, we started to encounter all kinds of strange behaviours such as: StoreKit2 error (in Xcode) Received error that does not have a corresponding StoreKit Error: Error Domain=ASDErrorDomain Code=825 "No transactions in response" UserInfo={NSDebugDescription=No transactions in response} Purchase did not return a transaction: Error Domain=ASDErrorDomain Code=825 "No transactions in response" UserInfo={NSDebugDescription=No transactions in response} In some cases the transaction id resulting from the payment was retuned "" or nil, causing our server to raise an exception. Newly created sandbox account that was raising an error that says "there is already a subscription made on this apple id". Delays in the payment processing Today, without doing any code changes, we managed to test all the scenarios without encountering any issue. Due to the oscillating experience we had in the sandbox environment, we are considering postponing the release and maintaining StoreKit 1 for now, but even in this case, the fact that App Store Connect does not offer the possibility of rolling back the Notification Service to v1, causes inconvenience. Has anyone encountered something similar? Is migrating to v2 a good choice?
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Unexpected App Store Server Notification offerIdentifier
My server receives App Store Server Notification v2 notifications. Recently, it has been receiving notifications for offer codes under offers that have been deactivated. The custom code value may be the same in the active offer as the deactivated offer. When a user redeems the custom offer code for a deactivated offer, the notification payload's offerIdentifier value now contains the UUID associated with that offer in the URL in App Store Connect (like https://appstoreconnect.apple.com/apps/my-app-id/distribution/subscriptions/my-subscription-id/pricing/offer-codes/offer-uuid) The notification payload contains: {"offerIdentifier": "offer-uuid"} instead of {"offerIdentifier": "<My offer identifier from App Store Connect>"} Is it possible for a deactivated offer to be redeemed? If not, is this a known issue? We need the actual offer identifier to understand which offers users are redeeming. Is this replacement with a UUID a known issue?
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Oct ’24
Can't receive in app purchase notification in production. But it's fine on TestFlight.
Hello everyone, We have an app that implements in-app purchases, and we're using the notification settings outlined in this Apple Developer guide. Everything is functioning correctly in TestFlight, and our server successfully receives notifications from Apple. However, after releasing the app to production, we're no longer receiving these notifications, while the TestFlight version continues to work as expected. Has anyone encountered a similar issue or have any suggestions on how to resolve this? Thank you for your help!
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126
Oct ’24
keep getting 401 Unauthorized error when fetching Apple's public keys.
I keep getting 401 Unauthorized error when fetching Apple's public keys. In [14]: print(f"Error fetching public keys: {response.status_code} {response.text}") Error fetching public keys: 401 Unauthenticated I've verified that the Key ID, Issuer ID, and private key file are all correct, with the private key having admin access. The server time is correctly set to UTC. Given this, I can't identify what might be causing the issue. Any insights? def generate_apple_developer_token(): # Load the private key in PEM format with open(PRIVATE_KEY_FILE, 'rb') as key_file: private_key = serialization.load_pem_private_key( key_file.read(), password=None, backend=default_backend() ) # JWT header headers = { "alg": "ES256", "kid": KEY_ID, "typ": "JWT" } # JWT payload payload = { "iss": ISSUER_ID, "iat": int(datetime.utcnow().timestamp()), "exp": int((datetime.utcnow() + timedelta(minutes=10)).timestamp()), "aud": "appstoreconnect-v1", } # Encode the header and payload as base64 header_base64 = base64.urlsafe_b64encode(json.dumps(headers).encode()).decode().rstrip("=") payload_base64 = base64.urlsafe_b64encode(json.dumps(payload).encode()).decode().rstrip("=") # Concatenate header and payload message = f"{header_base64}.{payload_base64}".encode() # Sign the message using ECDSA with SHA256 signature = private_key.sign( message, ec.ECDSA(hashes.SHA256()) ) # Convert the DER-encoded signature to raw format (r and s concatenated) der_to_raw_ecdsa_format = lambda der: der[4:36] + der[-32:] # Convert the signature to raw format (64 bytes) signature_64 = der_to_raw_ecdsa_format(signature) # Base64 URL-encode the signature signature_base64 = base64.urlsafe_b64encode(signature_64).decode().rstrip("=") # Concatenate header, payload, and signature to form the JWT jwt_token = f"{header_base64}.{payload_base64}.{signature_base64}" return jwt_token def get_apple_public_keys(): try: # Generate a fresh JWT developer_token = generate_apple_developer_token() # Set up headers with the authorization token headers = { "Authorization": f"Bearer {developer_token}" } # Fetch the public keys from Apple response = requests.get('https://api.storekit.itunes.apple.com/in-app-purchase/publicKeys', headers=headers) # Log the response if it's not successful if response.status_code != 200: print(f"Error fetching public keys: {response.status_code} {response.text}") response.raise_for_status() # Raises an exception for 4xx/5xx errors # Parse and return the public keys response_data = response.json() keys = response_data.get('keys') if not keys: print("No 'keys' found in the response from Apple.") return [] return keys except requests.exceptions.RequestException as e: print(f"Error fetching Apple's public keys: {e}") return []
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Oct ’24
Issues with Subscription Validation using Apple APIs and Server Notifications
Hello, We’re implementing subscription validation on our server using Apple’s latest APIs and have run into a few issues and uncertainties. We are transitioning away from the deprecated /verifyReceipt endpoint and are now using the /inApps/v1/subscriptions/{transactionId} API. However, we have questions about how to handle transaction validation, particularly around older transactions and notification behavior in the sandbox environment. Additionally, we are facing challenges with Apple Server Notifications, especially regarding when we should expect to be notified of subscription cancellations or expirations. Below are the specific questions we hope the community can help us with: Question 1: We are using the inApps/v1/subscriptions/{transactionId} API to retrieve the subscription status and validate subscriptions on our server side, since the /verifyReceipt endpoint has been deprecated. This API always returns the last transaction for a subscription. Should we only validate the latest transaction, and is it guaranteed that even if we provide an older transaction ID, the API will always return the most up-to-date transaction information? https://developer.apple.com/documentation/appstoreserverapi/get_all_subscription_statuses/ https://developer.apple.com/documentation/appstorereceipts/verifyreceipt Question 2: In the sandbox environment, we encountered an empty response when trying to validate a transaction ID. We are attempting to validate older transactions made by the user to keep our system and store subscriptions in sync. Could you provide guidance on why this might be happening and how we can validate older transactions? Question 3: We are using Apple Server Notifications to track subscription renewals and changes. However, when a user disables auto-renewal, we do not receive a webhook notification when the subscription actually expires or is canceled. We only get notified when the user changes their renewal preferences. Should we expect a separate notification when the subscription fully expires or is canceled, or is this behavior expected? https://developer.apple.com/documentation/appstoreservernotifications/notificationtype
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Oct ’24
Selling the same subscription in multiple apps
I want to sell the same subscription in multiple apps so that if someone subscribes in one they show up as having a subscription in the other. Apple's documentation states "To get started, use App Store Connect to create a separate and equivalent auto-renewable subscription for each app that offers the multi-app subscription so that users can subscribe from any app." (https://developer.apple.com/documentation/storekit/in-app_purchase/original_api_for_in-app_purchase/subscriptions_and_offers/offering_a_subscription_across_multiple_apps) But I'm unable to create two subscriptions with the same Product ID. I could create two subscriptions that are equivalent but with different Product IDs that are treated as the same by our server, which would accomplish the main goal, but I believe this risks someone subscribing to both subscriptions if they do so directly through the App Store, for example using a promo code link, because they're still two different subscriptions to Apple. Thanks!
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Oct ’24
Delayed App Store Server Notification(V2) for Subscription Purchase
We experienced an issue with delayed App Store Server notifications for an Auto-Renewable Subscription purchase in our app. On September 27, 2024, at 22:28:28 GMT+0900, a user successfully purchased a Premium membership subscription (transaction ID: 190002223966278, webOrderLineItemId: 190001007274949). However, our server did not receive the corresponding App Store notification for this transaction after purchase. The App Store Server Notification was only received 66 minutes later, at 23:35:16 (transaction ID: 190002224000004, webOrderLineItemId: 190001007274949). The delayed notification contained a different transaction ID than the initial purchase. We would like to inquire about the cause of this delay and request assistance in understanding why the notification took 66 minutes to be delivered to our server, instead of arriving immediately after the transaction was completed. Additionally, we would appreciate your guidance on how to prevent or mitigate such delays in the future, ensuring a seamless experience for our users. Are there any best practices or recommended approaches we should implement to handle potential notification delays more effectively? We have provided detailed information about the received notification and the related transactions in the Feedback Assistant (FB15330451). Thank you for your assistance in resolving this matter. Key Details Purchase time: 2024-09-27T22:28:28 GMT+0900 (1727443708000) Notification received: 2024-09-27T23:35:16 GMT+0900 (1727447716463) Delay: 66 minutes and 48 seconds Initial Purchase Transaction ID: 190002223966278 Initial Purchase Web Order Line Item ID: 190001007274949 Transaction ID in Delayed Notification: 190002224000004 Web Order Line Item ID in Delayed Notification: 190001007274949 Additional info Bundle ID: com.reppley.ReppleyApp SKU: com.reppley.ReppleyApp Feedback Assistant Number: FB15330451
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Oct ’24
Can't receive CONSUMPTION_REQUEST notification.
My App uses an auto-renewal subscription, and I've been using the CONSUMPTION_REQUEST event to track user refund requests. However, since yesterday morning, I haven't been receiving any CONSUMPTION_REQUEST notifications. All other notifications are functioning normally and I haven't changed anything. What could be the issue?
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Sep ’24
Only specific notification types are received from server notification.
I have set up server notification in my app. I have set up only production server URL and through that URL I can check "CONSUMPTION_REQUEST", "REFUND" notificationType. However, I want to check all notifications for in-app purchases. For example, "ONE_TIME_CHARGE" which is consumable in-app purchase type. If I want to check more notificationTypes on my server, Do I need to add another setting? Test notifications are also checked in my server. https://api.storekit.itunes.apple.com/inApps/v1/notifications/test
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Sep ’24
App Store Server Notification V2 on consumables ONE_TIME_PURCHASE
I am developing and implementing App Store Server Notification V2 for IAP for renewable subscription and consumables for an app My current flow is on receiving notification from apple, I will process the notification (e.g activate subscription, cancel subscription, etc.). But the ONE_TIME_PURCHASE notificationType only received in sandbox environment, the docs also said the same The ONE_TIME_CHARGE notification is currently available only in the sandbox environment. What is the best way for me to process user ONE_TIME_CHARGE transaction of consumables using App Store Server Notification V2 on production build app? Thank you
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Sep ’24
Suggestions for Improving Server Notifications for In-App Purchases
Dear Apple Development Team, I would like to draw attention to certain aspects of working with Server Notifications for In-App Purchases that could be improved to enhance development convenience and API efficiency. 1. Lack of Information on Non-Consumable Purchases in Server Notifications Currently, Server Notifications do not provide information about non-consumable purchases. This creates certain inconveniences when validating such purchases on the server. It would be extremely useful to have the ability to verify non-consumable purchases in the same way as subscriptions. Moreover, there is currently no way to obtain information about the amounts paid for non-consumable purchases, even with additional API requests. This limitation significantly complicates financial reporting and analytics for apps that utilize non-consumable purchases. While we can obtain information about the amount paid by the user for a subscription, we have no equivalent capability for non-consumable purchases. Adding this information to Server Notifications or providing an API endpoint to retrieve it would greatly improve our ability to track and analyze non-consumable purchase data without relying on client-side reporting. 2. Inconsistency in Token and Signature Handling There is some inconsistency in the approaches to authentication and verification between various Apple APIs. For example: When using Sign In with Apple, the approach with keyid is applied for JWT verification. In Server Notifications for In-App Purchases, certificate information is repeatedly duplicated in each notification. This leads to the need to implement different methods of JWT verification depending on the API being used. Additionally, the current approach with Server Notifications results in data redundancy: the useful payload is about 1.5 KB, while repetitive certificate information takes up about 17 KB in each notification. Unifying authentication and verification approaches across different APIs could significantly simplify development and improve data processing efficiency. We would appreciate consideration of these suggestions for API improvement. This could substantially simplify developers' work and increase the efficiency of integrating Apple services into applications. Thank you for your attention to this matter.
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346
Aug ’24