StoreKit

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Support in-app purchases and interactions with the App Store using StoreKit.

StoreKit Documentation

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ASDServerErrorDomain Code=3512
有人遇到这个问题吗,在支付的时候提示未知错误,具体的错误信息如下: 交易失败,outTradeNo:2025022631999900326, productId:com.f6car.p0001, error:Err-or -Domain=SKErrorDomain Code=0 "发生未知错误" UserInfo={NSLocalizedDescription=发生未知错误, NSUnderlyingError=0x302f50120 {Error Domain=ASDServerErrorDomain Code=3512 "无效的应用程序外部版本。" UserInfo={NSLocalizedFailureReason=无效的应用程序外部版本。}}} 寻求解决方案,感谢.
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244
Feb ’25
StoreKit1 Usage error
I encountered the following issues while developing in-app purchases; please help me: When attempting to purchase a product that has already been purchased, SKPaymentQueue reports an error instead of a success message: <SKPaymentQueue: 0x134665380>: Payment completed with error: Error Domain=ASDServerErrorDomain Code=3532 "You’re currently subscribed to this." UserInfo={NSLocalizedFailureReason=You’re currently subscribed to this., client-environment-type=Sandbox, AMSServerErrorCode=3532, storefront-country-code=USA} After buying product A on one iPhone using a sandbox account, restoring purchases on another iPhone with the same sandbox account via paymentQueue.restoreCompletedTransactions(withApplicationUsername:) does not return the previously purchased product A data; it directly calls restoreCompletedTransactionsFinished.
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148
Sep ’25
Issues with Integration of Promotional Offers in React Native app
Hi All, We are trying to integrate Promotional Offer in our app, We have a React Native app and are using react-native-iap for handling our in app purchases, as per the documentation we are generating signature in our BE and passing the proper details to the function as well, but for subscription request which have offer applied we are getting the apple pop up properly as well with offer details but when trying to subscribe it gives us SKErrroDomain: 12, for subscription without applying offer the subscription goes through but when we apply the offer we get the above error. Our app is currently in Development Stages and has not been sent for review sam for our subscription plans as well. Please let me know what could be the probable cause for this and help us resolve the issue. This is the code snippet of ours for the front end : export const buySubscription = async (subscriptionData: any) => { try { if (subscriptionData.offer_id) { const response = await getSubscriptionSignature( subscriptionData.productId, subscriptionData.offer_id, ); const offerData = response?.data; const offer = { identifier: offerData?.offer_id, keyIdentifier: offerData?.key_id, nonce: offerData?.nonce, signature: offerData?.signature, timestamp: Number(offerData?.timestamp), }; await requestSubscription({ sku: subscriptionData.productId, withOffer: offer, }); } else { await requestSubscription({ sku: subscriptionData.productId }); } } catch (err) { logger.error('Subscription error: ' + JSON.stringify(err)); throw err; } }; and 
from my python Backend which generates the signature:

def generate_signature(self, product_id: str, offer_id: str) -> dict: """ Generate signature for Apple StoreKit promotional offers. Args: product_id: The product identifier from App Store Connect offer_id: The promotional offer identifier Returns: dict: Contains signature and required metadata Reference: https://developer.apple.com/documentation/storekit/in-app_purchase/original_api_for_in-app_purchase/subscriptions_and_offers/implementing_promotional_offers_in_your_app """ try: # Generate UUID without dashes and use as nonce nonce = str(uuid.uuid4()) timestamp = get_current_time_ms() # milliseconds # Create the payload string in exact order required by Apple payload_components = [ self.bundle_id, # App Bundle ID self.key_id, # Key ID from App Store Connect product_id, # Product identifier offer_id, # Promotional offer identifier nonce, # UUID without dashes str(timestamp) # Current timestamp in milliseconds ] payload_str = "\u2063".join(payload_components) # Use Unicode separator logger.debug(f"Signing payload: {payload_str}") # Create SHA256 hash of the payload digest = hashes.Hash(hashes.SHA256()) digest.update(payload_str.encode('utf-8')) payload_hash = digest.finalize() # Sign the hash using ES256 (ECDSA with SHA-256) signature = self.private_key.sign( data=payload_hash, signature_algorithm=ec.ECDSA(hashes.SHA256()) ) # Encode signature in base64 signature_b64 = base64.b64encode(signature).decode('utf-8') logger.info(f"Generated signature for product {product_id} and offer {offer_id}") return { "key_id": self.key_id, # Changed to match Apple's naming "nonce": nonce, # UUID without dashes "timestamp": timestamp, # As integer "signature": signature_b64, # Base64 encoded signature "product_id": product_id, # Changed to match Apple's naming "offer_id": offer_id # Changed to match Apple's naming } except Exception as e: logger.error(f"Failed to generate signature: {str(e)}") raise HTTPException( status_code=500, detail=f"Failed to generate signature: {str(e)}" )
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69
Apr ’25
Subscription Cancellation
Hi Team, I’ve successfully implemented the subscription flow for my app. However, I’m currently facing challenges related to testing the cancellation behavior for auto-renewable subscriptions. Specifically: I’m unable to locate the correct payload structure for the following test endpoint: https://api.storekit-sandbox.itunes.apple.com/inApps/v1/notifications/test I’m also unclear on how to simulate or complete the full lifecycle of a subscription (including cancellation) using Apple’s sandbox environment or APIs. Could you please guide me on how to: Retrieve or construct the proper payload for the test notification API? Simulate a cancellation flow end-to-end in the sandbox for auto-renewable subscriptions?
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93
May ’25
不正利用された場合、Apple ID不正利用時とクレジットカード不正利用時で、アプリ側が行う標準的な対応プロセスは変わるのか
アプリに課金を実装しようと思うのですが、もし不正利用された場合、アプリ側は基本的にApp Storeを通じて対応するよう案内するのが一般的と思いますが、Apple ID不正利用時とクレジットカード不正利用時で、アプリ側が行う標準的な対応プロセスは変わるのか教えていただきたいです。 また下記内容は標準的な対応プロセスとして問題ないでしょうか?
 ■Apple ID不正利用時 → ユーザー自身がAppleサポートに連絡し、パスワード変更・二段階認証の設定・不正購入の返金申請などを行うよう案内する。 ■クレジットカード不正利用時 → まずカード会社への連絡を促すが、アプリ内決済に関してはAppleのカスタマーサポート経由で返金や調査手続きを案内する 不正利用されたユーザーへの対応に備えて、アプリ側が考慮すべきことがあれば教えてください。
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102
May ’25
react native iap not providing the subscription information
I am handling the buy subscription with this function const handleBuySubscription = async (productId) =&gt; { try { await requestSubscription({ sku: productId, }); setLoading(false); } catch (error) { setLoading(false); if (error instanceof PurchaseError) { errorLog({ message: [${error.code}]: ${error.message}, error }); } else { errorLog({ message: "handleBuySubscription", error }); } } }; but the requestSubscription({ sku: productId, }) does not return anything, and it is stuck at await
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74
Aug ’25
Subscription IAP - SubscriptionStoreView results and errors - more info needed. FB19376771
FB19376771 Transactions monitoring. If I only have subscriptions, do I really need to "bother" with any sort of monitorTransactions() or just rely on subscription status (subscribed, revoked, cancelled ...) ? This is in line with Apple SKDemo and recommendation: // Only handle consumables and non consumables here. Check the subscription status each time // before unlocking a premium subscription feature. switch transaction.productType { ref: [https://developer.apple.com/documentation/storekit/implementing-a-store-in-your-app-using-the-storekit-api) The "Only handle consumables and non consumables here" recommendation by Apple in ref to the process transaction code above is nuanced and confusing if we know what was with other external experts recommendation saying when using only SK2 Views : "This is where most developers trip up in trying to get an experience that App Review is happy" ... continuing : "Be careful: that Purchase View code alone isn’t enough, because one of the possible completion status is .pending: the purchase is in the process of happening but hasn’t completed yet, so you still need to watch the transaction queue manually to be absolutely sure of handling the process completely." Does this holds true for the new SubscriptionStoreView ? We are not sure with quite obscure Apple documentation what SubscriptionStoreView handles, other than purchase (and now subscribe) function, and we do not know what diverse type of error handling messages it can return. Moreover, Apple documents: "Only handle consumables and non consumables here" ? @Apple can you please share more insights on Purchase button on SubscriptionStoreView e.g A) does it close ( finish). the purchase transaction ? B) What error results can it return ? C) What .onInAppPurchaseCompletion can handle as result ?
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71
Aug ’25
Inconsistent notification coming from AppStore Servers
I encountered a scenario involving a subscription and need to determine if it's a problem or an expected outcome. Here are the details: My service received a notification from Apple of type DID_CHANGE_RENEWAL_STATUS with subtype AUTO_RENEW_DISABLED. The status field received on the payload was equal to 1 - Active. (2024-12-19T15:34:53.801) My service again received a DID_CHANGE_RENEWAL_STATUS with subtype AUTO_RENEW_DISABLED. But the status field received was 2 - Expired. (2024-12-19T23:34:57.527) My service received an EXPIRED with subtype VOLUNTARY notification. (2024-12-19T23:35:01.669) Is the event 2 an inconsistent event? Since we are receiving a notification that means the auto renew was disabled when the subscription was already expired.
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326
Jan ’25
SKAN / AdAttributionKit Development Postback Not Triggering
We’re testing SKAN postbacks via AdAttributionKit but aren’t receiving any requests on our server even after generating development impressions and triggering a postback. Setup: Domain: https://linkrunner-skan.com Configured in Info.plist as: <key>NSAdvertisingAttributionReportEndpoint</key> <string>https://linkrunner-skan.com</string> <key>AttributionCopyEndpoint</key> <string>https://linkrunner-skan.com</string> Apple automatically appends the .well-known paths: /.well-known/private-click-measurement/report-attribution/ /.well-known/skadnetwork/report-attribution/ ATS diagnostics for the domain: PASS for all tests (TLS 1.0–1.3, PFS disabled, arbitrary loads allowed, etc.) Both .well-known paths are publicly accessible and return 200 OK Testing Flow: Enabled Developer → AdAttributionKit Developer Mode on iOS (15+) Followed Apple’s official guide: Testing AdAttributionKit with Developer Mode Generated test impression using: createAdAttributionKitDevelopmentImpression implemented in SKANManager.swift Called Postback.updateConversionValue with lockPostback: true Created Development Postback from Developer Settings Waited 30+ minutes while intercepting server requests (proxy + backend logs) What We’ve Tried So Far: Confirmed ATS compliance with nscurl --ats-diagnostics (all PASS) Verified .well-known paths are accessible publicly without redirects Tested endpoints manually with a POST request – server responds 200 OK Confirmed Info.plist entries exactly match Apple’s required keys Double-checked iOS device is running iOS 15+ with Developer Mode enabled Repeated test flow multiple times with fresh impressions and postbacks Waited up to 1 hour for postback (in case of delays) Issue: No POST requests are being received from Apple to either .well-known endpoint, even though the setup appears correct and ATS tests pass. References Used: Configuring an Advertised App Generating JWS Impressions Question: Has anyone faced a similar issue where AdAttributionKit Development Postbacks are not firing despite correct Info.plist setup, ATS compliance, and reachable .well-known endpoints? Any insight into possible missing configuration steps or testing nuances would be greatly appreciated.
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54
Aug ’25
integrating In-App Purchases on PWA.
I am trying to launch a PWA as an application on App Store, and got rejected cause of In-App Purchases. Application is about content generation and selling subscriptions for premium content. So thats why needed to implement In-App Purchases. I have created wrapper via PWABuilder. And it is looking great so far, now my question is about How can I implement In-App Purchases in the bundle which is already created. Any suggestions will be appreciated. More clarification:- I have that product running on Web right now, we have integrated Stripe for payment handling for subscriptions. If there is nothing we can do for In-App Purchases then we have to make purchases on website and then user will be able to experience the changes. We tried that, but then we got rejected for showing locked premium content on user's feed. Also can't show any CTA or Subscribe text or button.
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133
Jul ’25
'Invalid value for purchase intake' error
Hello, I recently saw this error from StoreKit in the Console - 'Invalid value for purchase intake' - while debugging a SKPayment subscription issue (where a valid receipt should be verified and restored, but isn't for one user). I haven't been able to find any documentation about this message and wondered if it was related at all. There were two other logs from StoreKit right before saying: 'Found 3 products in receipt with ID' 'Processing ad attribution purchase intake' Does anyone know what 'invalid value for purchase intake' is referencing? We don't have the AdAttributionKit implemented. It sounds like it might be related to that instead? Thank you
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87
Jul ’25
in-app purchases
I implemented consumable in-app purchases in an iPhone app using ProductView(). When I tap the payment button in ProductView(), I am taken to the payment screen and once the payment is completed the next code seems to be executed, so there doesn't seem to be a problem, but if I tap the payment button in ProductView() again, the next code is executed without taking me to the payment screen. This means that a single payment can be made multiple times. Can someone help? ProductView(id: "geminiOneMatch") .productViewStyle(.compact) .padding() .onInAppPurchaseCompletion { product, result in if case .success(.success(_)) = result { // 課金が成功した場合の処理 gemini.addOneMatch(amount: 20) popUpVM.geminiOneMatchPopUp = false dataManageVM.generateRespons(locale: locale) } }
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233
Jul ’25
Response of the server-side verifyReceipt endpoint when using offer codes
Hi, We use the (now deprecated) server-side receipt verification API (*1) with the app we are maintaining and there are some points I would like confirm on how its response changes based on whether the purchase being processed was a subscription that used an offer code or not. I am particularly concerned about the following: Are there any properties of the response that are added or missing? Is there any property indicating that an offer code was used? If there is, which field is that and what values does it take? Are there any special steps or options required when processing the receipt which used an offer code on the server side? *1 https://developer.apple.com/documentation/appstorereceipts/verifyreceipt
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250
Jan ’25
Is there an API provided by the App Store Server API for canceling subscriptions?
Is there an App Store Server API available that allows cancellation of specific subscriptions by specifying transaction_id or similar identifiers? Background of these questions: We occasionally suspend user accounts due to violations of our service terms and conditions. In such cases, we would like to forcibly cancel their subscriptions if possible. However, we could not find relevant information in the documentation, which is why we are reaching out with these questions. Please let us know.
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80
Jul ’25
Reporting your App Store Server Library issue
If you are experiencing an unexpected or inconsistent behavior when using the App Store Server Library, review the following resources to ensure that your implementation workflow didn’t cause the issue: Simplifying your implementation by using the App Store Server Library Explore App Store server APIs for In-App Purchase Meet the App Store Server Library If you are unable to resolve your issue using the above resources, file a GitHub issue. Alternatively, if you wish to provide specific requests, transactions, or other private information for review, submit a Feedback Assistant report with the following information: The bundleId or appAppleId of your app The date and time your issue occurred The library language(s) The version of the library The environment (i.e., Production, Sandbox, or Xcode) The GitHub issue for this report if available The endpoint(s) reproducing your issue The HTTP body and headers of the endpoint raw request The HTTP body and headers of the endpoint response To submit the report, perform these steps: Log into Feedback Assistant. Click on the Compose icon to create a new report. Select the Developer Tools &amp; Resources topic. In the sheet that appears: Enter a title for your report. Select “App Store Server Library” from the “Which area are you seeing an issue with?” pop-up menu. Select “Incorrect/Unexpected Behavior” from the “What type of feedback are you reporting?” pop-up menu. Enter a description of your issue and how to reproduce it. Add the information gathered above to the sheet. Submit your report. After filing your report, please respond in your existing Developer Forums post with the Feedback Assistant ID. Use your Feedback Assistant ID to check for updates or resolutions. For more information, see Understanding feedback status.
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347
Feb ’25
Clarification on offerIdentifier Behavior in TransactionPayload and Upgrade Scenarios
Hello everyone, I have some questions regarding the behavior of the offerIdentifier property in the TransactionPayload from App Store Server Notifications. When a user redeems an Offer Code, the offerIdentifier field is populated with the respective identifier. However, I am unsure how this field behaves in different scenarios, and I would appreciate any insights or clarification: Does the offerIdentifier persist throughout the subscription lifecycle (from the initial purchase to expiration)? Does it become null once the Offer Code benefits expire? Is it only present at the time of purchase and omitted in subsequent notifications? Additionally, I would like to understand the behavior of the offerIdentifier in the following scenario: A user purchases a lower-tier subscription using an Offer Code. Later, they upgrade to a higher-tier plan, causing the Offer Code benefits to effectively expire. What happens to the offerIdentifier in the transaction for the upgrade? Will it still appear in transactions after the upgrade, or will it be null? I couldn't find explicit details about these situations in the official documentation, so I hope someone here might have experience or knowledge to share. Thank you in advance for your help!
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396
Jan ’25
App Store Server Notifications Update
Hello Apple Support Team, We're a developer team that has created an app with subscription-based features, and we've been using App Store Server Notifications to receive updates about user subscription status changes. I'm reaching out to inquire about potential modifications to the App Store Server Notifications approach that might have improved notification delivery times for my app. So on our appstore app, when a user purchases a subscription, the apple server notifications reach our server and send us the complete detail of that user’s purchase for eg he upgraded or downgraded etc. And then based on the data we receive from app store server notifications, we save it in our database, along with updating the users subscription table in the database. Previously, we experienced delays in receiving the real time notifications from apple on our server, sometimes taking a few minutes, while other times they would arrive immediately. And because of this issue, the users faced delay in seeing their subscription updates, as our db was updated only after the app store server notification reached our server. However, recently, we've noticed a significant improvement, and notifications are now being delivered still in real-time, but without any noticeable delays. I'm wondering if Apple has made any changes to the App Store Server Notifications system that might have resolved the delay issue. Could you please confirm if any modifications were made in 2025, specifically from January onwards, that might have improved notification delivery times? Additionally, I'd like to know if these changes apply to both sandbox testing and production environments. If possible, could you please provide more information about the changes or direct me to a resource that might explain the updates? I'd appreciate your assistance in confirming this information, and I'm looking forward to hearing back from you.
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121
May ’25