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

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App Store Server API JWT Authentication Issue
Issue Description I am experiencing persistent 401 Unauthorized errors when attempting to access the App Store Server API using JWT authentication. Despite following Apple's documentation and regenerating keys, I am unable to successfully authenticate. Implementation Details I'm implementing JWT authentication for the App Store Server API to retrieve transaction information from the following endpoint: https://api.storekit.itunes.apple.com/inApps/v1/transactions/{transactionID} My JWT generation code (in PHP/Laravel) follows Apple's documentation: php$kid = '6W6H649LJ4'; $header = [ "alg" => "ES256", "kid" => $kid, "typ" => "JWT" ]; $iss = 'b8d99de7-b43b-4cbb-aada-546ec784e249'; // App Store Connect API Key Issuer ID $bid = 'com.gitiho.learnCourse'; // Bundle ID $payload = [ "iss" => $iss, "iat" => time(), "exp" => time() + 3600, "aud" => "appstoreconnect-v1", "bid" => $bid ]; $pathFileAuthKeyP8 = "AuthKey_6W6H649LJ4.p8"; $contentFileAuthKey = \File::get(base_path($pathFileAuthKeyP8)); $alg = "ES256"; $jwt = \Firebase\JWT\JWT::encode($payload, $contentFileAuthKey, $alg, null, $header); Steps Taken to Troubleshoot Verified that the Issuer ID is correct and in UUID format Confirmed that the Key ID matches the private key filename Regenerated the key with proper App Store Server API permissions Ensured the private key file is properly formatted with correct headers and footers Verified that the JWT is being properly encoded using the ES256 algorithm Confirmed the bundle ID is correct for our application Checked that the API endpoint URL is correct Additional Information This implementation previously worked correctly We started experiencing 401 errors recently without changing our implementation We are using the Firebase JWT library for PHP to encode the JWT Request Could you please help identify what might be causing these authentication failures? Is there any recent change in the authentication requirements or endpoint URLs that might be affecting our integration? Thanks for support me.
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95
Apr ’25
Verification failed with status INVALID_CHAIN_LENGTH
我正在通过集成app-store-server-library-java来实现 iap服务端校验。我参照了官网提供的Verification Usage 的代码,运行的时候异常信息如下: at com.apple.itunes.storekit.verification.ChainVerifier.verifyChainWithoutCaching(ChainVerifier.java:98) at com.apple.itunes.storekit.verification.ChainVerifier.verifyChain(ChainVerifier.java:71) at com.apple.itunes.storekit.verification.SignedDataVerifier.decodeSignedObject(SignedDataVerifier.java:186) at com.apple.itunes.storekit.verification.SignedDataVerifier.verifyAndDecodeTransaction(SignedDataVerifier.java:72) 我的代码如下: import com.apple.itunes.storekit.model.ResponseBodyV2DecodedPayload; import com.apple.itunes.storekit.verification.SignedDataVerifier; import com.apple.itunes.storekit.verification.VerificationException; import com.auth0.jwt.JWT; import com.auth0.jwt.interfaces.DecodedJWT; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.InputStream; import java.util.Base64; import java.util.Set; public class ExampleVerification { public static void main(String[] args) throws FileNotFoundException { String bundleId = "com.example"; Environment environment = Environment.SANDBOX; Set<InputStream> rootCAs = Set.of( new FileInputStream("AppleRootCA-G3.cer"), new FileInputStream("AppleRootCA-G2.cer") ); Long appAppleId = null; // appAppleId must be provided for the Production environment SignedDataVerifier signedPayloadVerifier = new SignedDataVerifier(rootCAs, bundleId, appAppleId, environment, true); String appTransactionJWS = "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.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.2ZO5xsx-yywP4IyaDz4KQ3mq181ZGwlX2uANSm-kHq50KIdMMUDveMsCrcZmHdzLH2rpfPsXKaIMdM25Hdcuuw"; DecodedJWT unverifiedJWT = JWT.decode(appTransactionJWS); String header = unverifiedJWT.getHeader(); System.out.println(new String(Base64.getDecoder().decode(header))); try { signedPayloadVerifier.verifyAndDecodeTransaction(appTransactionJWS); } catch (VerificationException e) { e.printStackTrace(); } } } 查看了ChainVerifier.java 源代码,发现 private static final int EXPECTED_CHAIN_LENGTH = 3; // <--- 关键常量 // ... PublicKey verifyChainWithoutCaching(String[] certificates, boolean performRevocationChecking, Date effectiveDate) throws VerificationException { // ... 解析证书代码 ... if (parsedCertificates.size() != EXPECTED_CHAIN_LENGTH) { throw new VerificationException(VerificationStatus.INVALID_CHAIN_LENGTH); // <--- 抛出异常点 } // ... 后续验证代码 ... } appTransactionJWS是来自客户端的沙盒环境。 我发现沙盒环境的jws总是包含一个证书,而后端验证又必须要求三个证书,请问这个问题如何解决。
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62
Oct ’25
not getting stable release versions of some apps from the ios app store
I have been receiving beta software from the iPad App Store, despite not being enrolled in a beta program. Additionally, I do not have TestFlight or the Feedback app installed on my device. There are no certificates or profiles displayed either. I am using the App Store app that comes preinstalled on my device (note that I am not located in Europe). My iPad has been experiencing significant bugs, including numerous screen glitches and periods of sluggishness. Furthermore, numerous applications have crashed frequently. I was able to confirm that I was receiving beta software because the crash reports include beta identifier numbers. According to Apple documentation regarding analytic reports, a beta identifier will only be visible for beta applications. anyone know what could be going on or how to fix this?
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53
Apr ’25
Guideline 2.1 - Performance - App Completeness
Apple review says , my app displayed an error when we attempted to purchase subscriptions. Please review the details and resources below and complete the next steps. Device type: iPad Air (5th generation) OS version: iPadOS 26.0.1 Next Steps When validating receipts on your server, your server needs to be able to handle a production-signed app getting its receipts from Apple’s test environment. The recommended approach is for your production server to always validate receipts against the production App Store first. If validation fails with the error code "Sandbox receipt used in production," you should validate against the test environment instead. Question: Is it due to Device being used by reviewer or is it really from my code. As my code relies on Apple infrastructure for purchases and all things. Initially i did had subscription reporting api for receipt handling and all.When i went through with ChatGPT it did say that issue is due to half baked subscription module on my server. So i decided not to send any Subscription related things to backend, now it's Apple only and on App side. Is it correct fix ? Or do i need to fix backend even though i have no use for it ? My team did test in sandbox env via internal testing that time we had no issues. And all was tested using Mobile devices, that's why i still have question just to be sure these errors are due to devices or not? Screenshot shared by Apple team did show they got a error popup saying Something went wrong : Unable to complete request. I am trying to reproduce in development but can't. Anyone had got same issue before and has information on how to resolve and test for it will be helpful. Thanks Shikhar Sahu
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69
Oct ’25
Recent issues in StoreKit products fetch
Hello everyone! We are observing a significant number of failures in the fetch of the products with StoreKit1, meaning that in a completely random way, some product identifiers are considered invalid in the response that we receive from Apple, and after some minutes these products are considered once again valid. The issue started on Thursday 04/24 around 12.00 am (UTC + 02.00) and from our dashboard we can clearly see the trend of these failures has some spikes at precise times. I am attaching a view that we use for monitoring purposes showing this trend, considering the data of this week. We are noticing this problem on multiple developer accounts and on multiple apps, which is leading us to think it could be an issue in the Apple backend processing the request. In our case, the apps are not launched correctly until all the products are fetched, and therefore the impact of this problem is very high. Is anyone experiencing something similar or do you have logs which allows you to identify such issues? The issue happens only in production, while in debug and TestFlight environment everything works well. Thank you for your support
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569
Apr ’25
Expo Store review
Hi does anyone have trouble using expo store review package for ios apps. for some reason on our app., the review may show for certain people, but when they submit a review, it doesn't update our review count
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84
Oct ’25
StoreKit JWT Verification Failing - Expired Certificate in x5c Chain Body
Starting around October 12, 2025 at 19:51 UTC, we're seeing intermittent failures when verifying StoreKit transaction JWTs. The issue appears to be related to certificate expiration in the x5c chain in the JWT tokens provided by Apple. What We're Seeing Some JWTs are being signed with different certificates. Some work, some fail certificate validation. Old Certificate (Expired - causing failures): Subject: Prod ECC Mac App Store and iTunes Store Receipt Signing Issuer: Apple Worldwide Developer Relations Certification Authority (G6) Serial: 166451396673336810269824643773700992094 Valid From: 2023-09-12 19:51:53 UTC Valid To: 2025-10-11 19:51:52 UTC ❌ EXPIRED New Certificate (Valid - working): Subject: Prod ECC Mac App Store and iTunes Store Receipt Signing Issuer: Apple Worldwide Developer Relations Certification Authority (G6) Serial: 95385247725814954943813376527885434295 Valid From: 2025-09-19 19:44:51 UTC Valid To: 2027-10-13 17:47:23 UTC ✓ VALID Current Status Most JWTs use the new valid certificate. Some JWTs still use the expired certificate. This appears inconsistent/random. I don't know if it's an issue with some of Apple's servers, or an issue with StoreKit on-device cache, but seems to me like a bug on Apple's side either way. Are we missing something? Is this a known issue? Any guidance or timeline from Apple would be greatly appreciated, as this is blocking legitimate paying users.
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219
Oct ’25
Is the following subscription cancellation flow possible for an iOS in-app subscription?
Is the following subscription cancellation flow possible for an iOS in-app subscription? (Note: This is during the feature planning stage, not actual app deployment.) Planned user flow: User taps the “Cancel Subscription” button Display a “Wait a moment!” screen showing how much the user has enjoyed BFLIX content (to encourage retention) User taps “Proceed to Cancel” Collect cancellation reason from the user Redirect the user to the Apple subscription management page to complete cancellation Can this flow be implemented under Apple’s current in-app purchase and App Store Review guidelines?
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26
Nov ’25
Biometric Authentication Behavior in IAP Sandbox Environment
Where the problem occurs: In-app purchase Non-ApplePay Non-local authentication login Environment where the problem occurs: Sandbox environment (Development environment, TestFlight environment) Problem handling process: Open page A in the app and purchase product B (auto-renewable subscription) on that page. User authentication is required to purchase product B. During the authentication process, the user needs to enter the Apple account and Apple account password. After completing the authentication, complete the purchase of product B. Problem in step 3: Why is FaceID or TouchID not used for authentication? Note: Face ID and Password -> iTunes Store and App Store -> Status is Enabled
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122
Jun ’25
Not receiving App Store Server Notifications for failed transactions
We are currently integrating In-App Purchases for our app and have configured App Store Server Notifications (v2) in the Sandbox environment. During testing, we observed the following issue: When a transaction is cancelled, declined, or pending (e.g., Ask to Buy flows or authorization pending), No App Store Server Notification is sent to our webhook endpoint. We only receive webhook events where the status is "purchased". This becomes a critical problem for us because our backend must accurately track transaction states including failed and pending purchases, especially for wallet top-up use cases. Additionally, we tried mocking failed transactions (via Xcode local environment and turning off In-App Purchases from Developer Settings) to simulate a technical failure scenario. Even in these cases, no webhook notification was received when the purchase failed server-side. Is it expected behavior in Sandbox that only successful transactions ("purchased") trigger webhooks? Are failed or pending transactions suppressed in Sandbox intentionally? Will webhook behavior be different in Production (i.e., will we receive webhook notifications for failures there)? Is there any extra configuration or entitlement needed to fully test failure scenarios via webhooks in Sandbox?
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86
Apr ’25
Guideline 2.1 - Performance - App Completeness We found that your in-app purchase products exhibited one or more bugs which create a poor user experience. Specifically, we were unable to make purchase. The Start Free Trail button was unresponsive t
I've been stuck with this rejection. Trial button 'greyed out' or non responsive. What they are seeing is my subscriptions not loading into the pay wall. We think its because the subscriptions haven't been reviewed and approved in order for them to populate the pay wall (activating the pay wall so it isn't 'greyed out'. Has anyone had and solved this issue?
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94
Jun ’25
Delete Offer Codes
Regarding the offer codes in https://developer.apple.com/help/app-store-connect/manage-subscriptions/set-up-offer-codes, I set up some incorrect offer codes by mistake. Currently, I can only deactivate it but I can't delete it. Is it possible to let me delete the incorrect offer codes due to the below reasons? Thank you. I can't recreate the offer code due to error message This reference name is or has been used by another offer in this subscription group. When I use the offer code redemption view in https://developer.apple.com/documentation/SwiftUI/View/offerCodeRedemption(isPresented:onCompletion:), it shows all the deactivated offer codes. I don't want them to be displayed in the page.
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65
Sep ’25
Get the region currently used in the macOS App Store
How can I get the region region currently used in the macOS App Store? Preferably via Swift libraries, but any command / function will suffice. The following StoreKit property seems to always return the region for the Apple Account associated with my macOS user. await Storefront.current?.countryCode See the Apple docs. My macOS Apple Account region is US; in the App Store, when I sign into a different Apple Account whose region is GB (UK), Storefront.current?.countryCode continues to return US, not GB (or UK). I correctly see prices in pounds instead of in dollars, British spelling instead of American spelling, apps listed in my purchased tab for the UK (not the US) Apple Account, and, in the Account Settings dialog, the UK Apple Account email address, billing address & Country/Region set to United Kingdom. I didn't get any relevant results from the following command lines: defaults find GB defaults find UK defaults find uk-apple-id@example.com defaults find uk-apple-id The following didn't change after I signed into the UK Apple Account in the App Store: $ defaults read com.apple.AppStoreComponents { ASCLocaleID = "en-US@calendar=gregorian"; } Maybe Storefront.current?.countryCode only specifies the country code for the Storefront that will be used for in-app purchases, instead of for purchasing new apps from the App Store; maybe the former is tied to the Apple Account for the macOS user, instead of to the Apple Account for the App Store. If that's the case, what other mechanism can I use to obtain the country code for the App Store storefront?
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98
Apr ’25
In-App Subscriptions Not Fetching in Sandbox or Production (expo-iap / React Native / Bare Workflow)
Hi everyone, I’m encountering an issue with my in-app subscriptions setup. When I test using the StoreKit configuration file in Xcode, everything works correctly — the subscriptions are fetched and I can simulate purchases without any issues. However, when I switch to the Sandbox or Production environment, my app fails to fetch the available products from Apple’s servers. The call to fetchProducts (from the expo-iap library) returns an empty array. Here’s some context about my setup: Framework: React Native (Expo Bare Workflow) Library: expo-iap Products: Auto-renewable subscriptions StoreKit Configuration: Synced with App Store Connect Status: Subscription Plans are approved in App Store Connect I’ve verified the following: The product identifiers in code match exactly with those in App Store Connect. The app is signed with the correct bundle ID. I’m testing with a Sandbox account (logged in via Settings -> Developer -> Sandbox Tester Account). Despite this, the response from Apple’s servers still contains an empty array. Has anyone experienced something similar with expo-iap or in general when moving from StoreKit configuration to Sandbox/Production? Any suggestions on what else I could check or common pitfalls I might be missing? Thanks in advance!
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137
Oct ’25
Best way to share subscriptions between iOS and watchOS apps
I'm working on a watchOS app that has an iOS counterpart. There will be a subscription required to unlock functionality and I would like the user to be able to make the purchase on either the iPhone or the watch and have both apps unlock. The first link below says that StoreKit 2's Transaction.currentEntitlements will not work in this case like it does with extensions. The second link says it might work but doesn't in the sandbox. What is the best way to make this work? Will it just work in the App Store? Should I use WCSession to send the purchase information from one platform to the other and store it in the keychain? Something else? Via https://www.revenuecat.com/blog/engineering/ios-in-app-subscription-tutorial-with-storekit-2-and-swift/ "Transaction.currentEntitlements can be used in extensions the same way it was used in the previous steps. This works for extensions like Widgets and Intents. However, an iOS app with a companion watchOS app will not work even though Transaction.currentEntitlements can be executed in it. A companion watch app does not stay updated with the same transaction history as its iOS app because they are separate platforms." Via https://developer.apple.com/forums/thread/739963 "In TestFlight I was able to confirm that the Watch app and IOS app share in-app purchases. It seems the problems confirming this with Storekit and Sandbox are limits of the testing environments."
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295
Mar ’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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369
Feb ’25
app signatures do not appear in sandbox
I've been trying to make my app available on the App Store for a month now, but I can't because the signatures I created don't appear in the sandbox app. I did all the configuration in the store and in the app. I tested the same code in another app with signatures and it was loaded, but the signature for that specific app doesn't appear. I've tried contacting Apple support, but they can't help me. It almost seems like it's on purpose. I'm treated like crap and they don't even give me an explanation about what's happening. Can anyone help me?
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169
Mar ’25
Can't fetch products
Use the following method to fetch: let appProducts = try await Product.products(for: productIdentifiers) The following checks have been carried out ✅ Must-check points App ID capabilities Subscription product status (ready to submit) Why The result is an empty array?
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53
Sep ’25