Dear Apple Technical Support Team,
We have encountered a potential issue related to transaction handling while using StoreKit v2, and would greatly appreciate your assistance in confirming the behavior or providing any relevant guidance.
Issue Description:
When calling Transaction.unfinished and listening to Transaction.updates on the client side, we noticed that some transactions—despite having already been processed and successfully completed with finish()—are being returned again upon the next app launch, which results in duplicate receipt uploads.
Current Handling Flow:
1. Upon app launch:
• Iterate over Transaction.unfinished to retrieve unfinished transactions;
• Simultaneously listen for transaction changes via Transaction.updates (e.g., renewals, refunds);
2. For each verified transaction, we immediately call await transaction.finish();
3. We then construct a transaction model, store it locally, and report it to our backend for receipt verification;
4. After the server successfully verifies the receipt, the client deletes the corresponding local record;
5. On every app launch, the client checks for any locally stored receipts that haven’t been uploaded, and re-uploads them if necessary.
Key Code Snippets:
private static func verifyReceipt(receiptResult: VerificationResult) -> Transaction? {
switch receiptResult {
case .unverified(_, _):
return nil
case .verified(let signedType):
return signedType
}
}
public static func handleUnfinishedTransactions(payConfig: YCStoreKitPayConfig, complete: ((YCStoreKitReceiptModel?) -> Void)?) {
Task.detached {
for await unfinishedResult in Transaction.unfinished {
let transaction = YCStoreKitV2Manager.verifyReceipt(receiptResult: unfinishedResult)
if let transaction {
await transaction.finish()
if transaction.revocationDate == nil {
let receipt = YCStoreKitV2Manager.createStoreKitReceiptModel(
transation: transaction,
jwsString: unfinishedResult.jwsRepresentation,
payConfig: payConfig,
isRenew: false
)
complete?(receipt)
}
}
}
}
}
private func observeTransactionUpdates() -> Task<Void, Never> {
return Task {
for await updateResult in Transaction.updates {
let transaction = YCStoreKitV2Manager.verifyReceipt(receiptResult: updateResult)
if let transaction {
await transaction.finish()
if transaction.revocationDate == nil {
let receipt = YCStoreKitV2Manager.createStoreKitReceiptModel(
transation: transaction,
jwsString: updateResult.jwsRepresentation,
payConfig: self.payConfig,
isRenew: false
)
self.callProgressChanged(.receiptPrepared, receiptModel: receipt, errorType: .none, error: nil)
}
}
}
}
}
Our Questions:
1. Is it possible for Transaction.unfinished or Transaction.updates to return transactions that have already been finished?
Specifically, if a transaction was successfully finished in a previous app launch, could it still be returned again during the next launch?
2. Are there any flaws in our current handling process?
Our current sequence is: finish() → construct model → local save → report to server → delete after verification. Could this order lead to timing issues where StoreKit considers a transaction unfinished?
3. If we need your assistance in investigating specific user transaction records or logs, what key information should we provide?
We greatly appreciate your support and look forward to your response to help us further optimize our transaction processing logic.
StoreKit
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Hi, I've some issues on my application about purchases.
My app is available for iOS and tvOS.
Some part of my code is the same on both target (my purchase code is one of them).
The issue is:
Some users can't do a purchase on Apple TV (but not all and I can't reproduce)
Some users purchased on a device and are not considered as pro on the other device (logged with same apple account). Again it's not all.
Here is my store code
I just converted my App to Freemium, but the method is used to give user, that bought the App before it was free, access to the paid futures seems not to be working.
I am getting the original Purchase Date from the AppTransaction (https://developer.apple.com/documentation/storekit/apptransaction/originalpurchasedate) and comparing that to a set date where the App Model changed. In Test Flight this is working without any Problems but on the Live System, users that have purchased the App do not get access!
let shared = try await AppTransaction.refresh()
if case .verified(let appTransaction) = shared {
result(appTransaction.originalPurchaseDate.ISO8601Format()).
}
I am using flutter to develop the App and the result()... send the string back to the flutter side.
Here is the code of the Flutter side:
Future<void> restorePurchases() async {
SubscriptionProvider().updatePayment(PurchaseStatus.pending);
await InAppPurchase.instance.restorePurchases();
if (Platform.isIOS) {
DateTime changedToFreemium = DateTime.utc(2025, 4, 7, 11, 0, 0);
String? purchaseDateRaw = await IosFlutterChannel().getOriginalPurchaseDate();
if (kDebugMode) {
print("Purchase Date Raw: $purchaseDateRaw");
}
if (purchaseDateRaw != null) {
DateTime purchaseDate = DateTime.parse(purchaseDateRaw);
if (purchaseDate.isBefore(changedToFreemium)) {
if (kDebugMode) {
print("Restoring legacy purchases");
}
SubscriptionProvider().update(true, SubscriptionStatus.active, SubscriptionType.fs_lifetime);
} else {
if (kDebugMode) {
print("Not restoring legacy purchases");
}
}
}
}
SubscriptionProvider().updatePayment(PurchaseStatus.purchased);
}
Console Log when running in Test Environment:
flutter: Purchase Date Raw: 2013-08-01T07:00:00Z
flutter: Restoring legacy purchases
Thanks!
I cannot explain how frustrating this is. Not that I want to compare to Android, but in 3 years of QA Testing my app, Android works like a dream, while iOS fights with me EVERY SINGLE STEP OF THE WAY.
Hopefully someone here can tell me what I am missing/doing wrong/which god I must appease to get this to work.
I have 3 REAL iPhones of varying iOS versions and ages. But they are all proper actual iPhones. We use google accounts at this company, so my primary email is a gmail one.
I have created MANY sandbox accounts inside App Store Connect. Currently I have 2, and 2 of my devices (both 14's one of which is a Pro) have my Primary account as the main account for the device. But they both also have a Sandbox account which is simply my main email with a +sandbox in it to make it a new unique email.
Here is the problem, nothing works as expected ever. I can install my Staging and Production apps from TestFlight, then I can make a subscription purchase as a customer would and I SHOULD see that subscription in my Sandbox right? That's the point of a Sandbox and TestFlight is it not? But in ALL cases whenever I try to view my 'Sandbox Subscriptions' it tells me I don't have any.
Now, sometimes, very occasionally, I get a specific error message inside my app when attempting to make a purchase, this one states something like 'You already have a subscription, please restore it instead...' which makes no sense. Since it clearly states that I have none. But this message has a 'Manage' button to manage my subscriptions, tapping it lads me to a windows which amazing DOES have a subscription in it. But attempting to 'Cancel' it does nothing, just refreshes the screen to be the same.
Now I think that this subscription is actually attached to the primary account on the device and NOT the sandbox account. So when this happens I cannot subscribe, I cannot restore, and I cannot manually alter the subscription within iOS. So I am stuck at this point.
What am I doing wrong, am I setting this all up in the wrong order? Do I need to install some kind of profile or security cert, do I need to give a pint of blood to Imhotep? What am I missing. I even once sat on the phone for 90 minutes with an Apple Support Rep who took me through it step by step, same result.
Also I just noticed that inside 'App Store Connect' when you look at the list of 'Sandbox' accounts there is a column for 'Last Purchase' which is entirely blank, apparently after a year of use I have NEVER purchased on the Sandbox, which is another reason I think my subs are going to the main email, not the sandbox one. I tried using the sandbox email as the main account for the whole device, I can't recall the result but it was worse and didn't work at all. So that's not it.
https://developer.apple.com/help/app-store-connect/test-in-app-purchases/create-a-sandbox-apple-account/ The instructions on this page are not detailed enough and were not helpful to me.
All I really want to know is how to fully setup a real actual iPhone for TestFlight and Sandbox testing of a app. WHat order do I create accounts, validate emails, attach to devices, login with etc etc etc. Step by step, nothing no matter how mundane missed out. A true idiots guide to making this work for me. Testing this on Android always takes 5 mins. iPhone, I'm lucky if I am done in half a day.
Please help and thanks for reading!
My Mac app fails to open for some users with the error:
"ABC.app does not support the latest receipt validation requirements."
I assume this is due to the update of the App Store receipt signing intermediate certificate with one that uses the SHA-256 algorithm.
I cannot reproduce this myself and I have trouble figuring out how to address this issue.
Below is the code that decrypts the receipt and verifies its signature.
How does this code need to be updated to support the new signing certificate?
Thanks a lot in advance!
inline static void CheckBundleSignature(void)
{
NSURL *bundleURL = [[NSBundle mainBundle] bundleURL];
SecStaticCodeRef staticCode = NULL;
OSStatus status = SecStaticCodeCreateWithPath((__bridge CFURLRef)bundleURL, kSecCSDefaultFlags, &staticCode);
if (status != errSecSuccess) {
[NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to validate bundle signature: Create a static code", nil];
}
NSString *requirementText = @"anchor apple generic";
SecRequirementRef requirement = NULL;
status = SecRequirementCreateWithString((__bridge CFStringRef)requirementText, kSecCSDefaultFlags, &requirement);
if (status != errSecSuccess) {
if (staticCode) CFRelease(staticCode);
[NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to validate bundle signature: Create a requirement", nil];
}
status = SecStaticCodeCheckValidity(staticCode, kSecCSDefaultFlags, requirement);
if (status != errSecSuccess) {
if (staticCode) CFRelease(staticCode);
if (requirement) CFRelease(requirement);
[NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to validate bundle signature: Check the static code validity", nil];
}
if (staticCode) CFRelease(staticCode);
if (requirement) CFRelease(requirement);
}
static NSData *DecodeReceiptData(NSData *receiptData)
{
CMSDecoderRef decoder = NULL;
SecPolicyRef policyRef = NULL;
SecTrustRef trustRef = NULL;
@try {
OSStatus status = CMSDecoderCreate(&decoder);
if (status) {
[NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to decode receipt data: Create a decoder", nil];
}
status = CMSDecoderUpdateMessage(decoder, receiptData.bytes, receiptData.length);
if (status) {
[NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to decode receipt data: Update message", nil];
}
status = CMSDecoderFinalizeMessage(decoder);
if (status) {
[NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to decode receipt data: Finalize message", nil];
}
NSData *ret = nil;
CFDataRef dataRef = NULL;
status = CMSDecoderCopyContent(decoder, &dataRef);
if (status) {
[NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to decode receipt data: Get decrypted content", nil];
}
ret = [NSData dataWithData:(__bridge NSData *)dataRef];
CFRelease(dataRef);
size_t numSigners;
status = CMSDecoderGetNumSigners(decoder, &numSigners);
if (status) {
[NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to check receipt signature: Get singer count", nil];
}
if (numSigners == 0) {
[NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to check receipt signature: No signer found", nil];
}
policyRef = SecPolicyCreateBasicX509();
CMSSignerStatus signerStatus;
OSStatus certVerifyResult;
status = CMSDecoderCopySignerStatus(decoder, 0, policyRef, TRUE, &signerStatus, &trustRef, &certVerifyResult);
if (status) {
[NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to check receipt signature: Get signer status", nil];
}
if (signerStatus != kCMSSignerValid) {
[NSException raise:@"MacAppStore Receipt Validation Error" format:@"Failed to check receipt signature: No valid signer", nil];
}
return ret;
} @catch (NSException *e) {
@throw e;
} @finally {
if (policyRef) CFRelease(policyRef);
if (trustRef) CFRelease(trustRef);
if (decoder) CFRelease(decoder);
}
}
Signed renewal info from 'Get Subscription Statuses' or in server notifications never has the offerType or offerDiscountType even when the corresponding transaction does have those values set.
Our offer is a free trial.
Do these properties refer to something different in JWSRenewalInfoDecodedPayload than they do in transactions?
I'm trying to determine whether a subscription (identified by originalTransactionId) is currently in a free trial based on server notifications. The status doesn't tell us if the subscription is currently in free trial and the signedTransactionInfo may be for an older transaction.
Whether using Storefront.current?.countryCode or SKPaymentQueue.default().storefront?.countryCode, both are returning "USA" only.
(It used to return the correct country code before the update.)
In the sandbox environment, the country code is returned correctly,
but in the TestFlight environment, it always returns "USA".
There's no mention of this behavior in the beta release notes, so I'm posting it here for visibility.
Hi,
Currently, instead of using a real device and test account for in-app purchase testing, we are using Products.storekit with the Simulator.
Our app offers a subscription plan with a 3-day free trial.
We would like to simulate the following test scenarios:
User cancels the subscription within the 3-day free trial period.
User cancels the subscription after the 3-day free trial period.
However, in Xcode, under Debug > StoreKit > Manage Transactions..., we couldn’t find an option to simulate a subscription cancellation.
There is an option to refund the purchase, but we believe this is not the same as a cancellation.
Do you have any idea how we can simulate these two cases using Products.storekit and the Simulator?
Thanks in advance!
Domain=NSURLErrorDomain Code=-1202 "The certificate for this server is invalid. You may be connecting to a server masquerading as a "auth-sandbox.itunes.apple.com", which threatens the security of your confidential information. "
Hello,
Having bad times with Development Postback copies receival on our custom server.
Current setup:
App is configured to be advertised (https://developer.apple.com/documentation/adattributionkit/configuring-an-advertised-app)
AdAttributionKit - Opt in for Reengagement Postback Copies ✅
AdAttributionKit - Postback Copy URL ✅
AdAttributionKit - Ad Network Identifiers ✅
Configured backend https://{name}.com/.well-known/appattribution/report-attribution/ (POST) ✅
Devices with iOS 18.4 (with Postaback Development tool and AdAttribution developer mode Enabled)
Tried different Postback setup combinations, with different app builds (debug, release installed from xcode/testflight) and with AdAttribution developer mode Enabled/Disabled - doesn't make any difference.
Console log:
Found 0 postbacks eligible for transmission for environments:
Any advise is very much appreciated
I am looking to move from paid app to fremium without upsetting my existing users. I see WWDC2022 session where new fields introduced in iOS 16 are used to extract original application version user used to purchase the app. While my app supports iOS 14 and above, I am willing to sacrifice iOS 14 and go iOS 15 and above as StoreKit2 requires iOS 15 at the minimum. The code below is however only valid for iOS 16. I need to know what is the best way out for iOS 15 devices if I am using StoreKit2? If it is not possible in StoreKit2, then how much is the work involved in original StoreKit API(because in that case I can handle for iOS 14 as well)?
I ran into a problem. When using Storekit1 to purchase an SKU, the user payment was successful, but StoreKit1 did return paymentCancelled to my App. I would like to know under what circumstances this problem may occur? How do I fix it? Thank you
In the sandbox environment, when I quickly and repeatedly purchase an item, Transaction.id will be repeated.
Will there be duplication in the production environment?
func pay(productId: String, orderId: String) async {
guard !productId.isEmpty, !orderId.isEmpty else { return }
let orderObj = ApplePayOrderModel.init(orderId: orderId, productId: productId)
do {
let result = try await Product.products(for: [productId])
guard let product = result.first else {
return
}
let purchaseResult = try await product.purchase()
switch purchaseResult {
case .success(let verification):
switch verification {
case .verified(let transaction):
orderObj.transactionId = String(transaction.id)
await transaction.finish()
case .unverified(let transaction, let error):
await transaction.finish()
}
case .userCancelled:
break
case .pending:
break
@unknown default:
break
}
} catch {
print("error \(error.localizedDescription)")
}
}
Topic:
App & System Services
SubTopic:
StoreKit
Hello!
We are tryign to test refund notifications and we've implemented a debug button trigger the refund of a purchase done with a sandbox account. The problem is that the refund view displays a Cannot Connect message and nothing happens. No error messages appear in the console. Anything we are doing wrong?
I am using StoreKit 2 for my products and noticed that users from Ukraine (for example) receive a wrong Product.displayPrice.
The App Store works with USD but shows the local currency UAH.
Any chance to display the correct currency (USD)?
Topic:
App & System Services
SubTopic:
StoreKit
We are facing a serious issues with in app purchases in our app.
We offer 3 IAP: auto-renewable subscription 1W, auto-renewable subscription 1Y, non-consumable one-time purchase (LifeTime access)
In our case 90-95% of transactions fail and we mostly get SKError code=2 .
Sometime purchase fails several times for the same user so it’s very hard to believe that user intentionally cancels transaction for the same product 4 or even 5 times in a row.
It happens regardless iOS version, device model, our app version.
We've checked multiple threads with the same issue but coudn't find any solution.
We do not offer any promotions, product identifiers are valid... Some users are able to make a purchases without any issues.
I'm encountering a crash on app launch. The crash is observed in iOS version 17.6 but not in iOS version 18.5. The only new notable thing I added to this app version was migrate to store kit 2.
Below is the error message from Xcode:
Referenced from: <DCC68597-D1F6-32AA-8635-FB975BD853FE> /private/var/containers/Bundle/Application/6FB3DDE4-6AD5-4778-AD8A-896F99E744E8/callbreak.app/callbreak
Expected in: <A0C8B407-0ABF-3C28-A54C-FE8B1D3FA7AC> /usr/lib/swift/libswift_Concurrency.dylib
Symbol not found: _$sScIsE4next9isolation7ElementQzSgScA_pSgYi_tYa7FailureQzYKFTu
Referenced from: <DCC68597-D1F6-32AA-8635-FB975BD853FE> /private/var/containers/Bundle/Application/6FB3DDE4-6AD5-4778-AD8A-896F99E744E8/callbreak.app/callbreak
Expected in: <A0C8B407-0ABF-3C28-A54C-FE8B1D3FA7AC> /usr/lib/swift/libswift_Concurrency.dylib
dyld config: DYLD_LIBRARY_PATH=/usr/lib/system/introspection DYLD_INSERT_LIBRARIES=/usr/lib/libLogRedirect.dylib:/usr/lib/libBacktraceRecording.dylib:/usr/lib/libMainThreadChecker.dylib:/usr/lib/libRPAC.dylib:/System/Library/PrivateFrameworks/GPUToolsCapture.framework/GPUToolsCapture:/usr/lib/libViewDebuggerSupport.dylib```
and Stack Trace:
```* thread #1, stop reason = signal SIGABRT
* frame #0: 0x00000001c73716f8 dyld`__abort_with_payload + 8
frame #1: 0x00000001c737ce34 dyld`abort_with_payload_wrapper_internal + 104
frame #2: 0x00000001c737ce68 dyld`abort_with_payload + 16
frame #3: 0x00000001c7309dd4 dyld`dyld4::halt(char const*, dyld4::StructuredError const*) + 304
frame #4: 0x00000001c73176a8 dyld`dyld4::prepare(...) + 4088
frame #5: 0x00000001c733bef4 dyld`start + 1748```
Note: My app is a Godot App and uses objc static libraries. I am using swift with bridging headers for interoperability. This issue wasn't observed until my last version in which the migration to storekit2 was the only notable change.
I have two sandbox users in App Store Connect, as I'm trying to test in-app purchases and Family Sharing. They're set up fine; I can make purchases in the app.
The issue is that the refund request sheet in my app sometimes shows properly and lets me request a refund, but I'd say >80% of the time the sheet just shows "Cannot Connect" with a "Retry" button. Hitting that button doesn't ever result in the sheet showing the refund page.
The only fix for this is to delete the app from the device, and restart the device.
This has to be a joke, right? I need to be able to test this IAP, and the sandbox environment is useless most of the time. Why?
Anyone experiencing this sort of issue?
When simulating a Storekit error like an invalid device verification or others of that type, should we finish a failed transaction? When I test with a storekit configuration file, all failed transactions persist after every restart. The Apple-provided sample code for storekit 2 has transactions finished only when they are successful.
iOS Storekit2 Appstore production environment, some user feedback in app purchase faliure, What our log records is StoreKitError.unknown,please How to solve problem, thanks