Apple Pay

RSS for tag

Discuss how to integrate Apple Pay into your app for secure and convenient payments.

Apple Pay Documentation

Posts under Apple Pay subtopic

Post

Replies

Boosts

Views

Activity

Problem Generating Signature for Subscription Offers – Error Code 18
I'm successfully using Apple subscriptions in my app, but I'm encountering SKErrorCodeDomain error 18 when trying to apply a subscription offer. I want apply offer code first time only for subscription. Below are details of what i set in appstore and what i have tested. Subscription Offer Details Offer Type: For the first month Customer Eligibility: New, Existing, and Expired Subscribers Code Status: Active Offer Code Creation Steps: App Store Connect → App → Subscription → Select Subscription Product → Offer Codes → Add → Add Custom Codes Signature Generation for Promotional Offers I'm following Apple's documentation to generate a signature: https://developer.apple.com/documentation/storekit/generating-a-signature-for-promotional-offers I’ve constructed the payload as instructed: appBundleId + '\u2063' + keyIdentifier + '\u2063' + productIdentifier + '\u2063' + offerIdentifier + '\u2063' + appAccountToken + '\u2063' + nonce + '\u2063' + timestamp Keys and Identifiers keyIdentifier, issuerId, and .p8 file are obtained from: App Store Connect → Users and Access → Integrations → In-App Purchase Test user created under: App Store Connect → Users and Access → Sandbox → Test Accounts Logged in with this account on the iPhone What I’ve Tried Verified all values used in the payload are correct Tried both seconds and milliseconds for the timestamp (as per documentation, it should be in milliseconds) Tried setting appAccountToken to: a valid UUID an empty string not setting it at all Used Apple’s sample code to generate a signature: https://developer.apple.com/documentation/storekit/generating-a-promotional-offer-signature-on-the-server Verified the generated signature locally, and it validated successfully: https://developer.apple.com/documentation/storekit/generating-a-signature-for-promotional-offers#Validate-locally-and-encode-the-signature Apple’s sample code to generate a signature Downloaded from const express = require('express'); const router = express.Router(); const crypto = require('crypto'); const ECKey = require('ec-key'); const secp256k1 = require('secp256k1'); const uuidv4 = require('uuid/v4'); const KeyEncoder = require('key-encoder'); const keyEncoder = new KeyEncoder('secp256k1'); const fs = require('fs'); function getKeyID() { return "KEYIDXXXXX"; } router.post('/offer', function(req, res) { const appBundleID = req.body.appBundleID; const productIdentifier = req.body.productIdentifier; const subscriptionOfferID = req.body.offerID; const applicationUsername = req.body.applicationUsername; const nonce = uuidv4(); const currentDate = new Date(); const timestamp = currentDate.getTime(); const keyID = getKeyID(); const payload = appBundleID + '\u2063' + keyID + '\u2063' + productIdentifier + '\u2063' + subscriptionOfferID + '\u2063' + applicationUsername + '\u2063'+ nonce + '\u2063' + timestamp; // Get the PEM-formatted private key string associated with the Key ID. // const keyString = getKeyStringForID(keyID); // Read the .p8 file const keyString = fs.readFileSync('./SubscriptionKey_47J5826J8W.p8', 'utf8'); // Create an Elliptic Curve Digital Signature Algorithm (ECDSA) object using the private key. const key = new ECKey(keyString, 'pem'); // Set up the cryptographic format used to sign the key with the SHA-256 hashing algorithm. const cryptoSign = key.createSign('SHA256'); // Add the payload string to sign. cryptoSign.update(payload); /* The Node.js crypto library creates a DER-formatted binary value signature, and then base-64 encodes it to create the string that you will use in StoreKit. */ const signature = cryptoSign.sign('base64'); /* Check that the signature passes verification by using the ec-key library. The verification process is similar to creating the signature, except it uses 'createVerify' instead of 'createSign', and after updating it with the payload, it uses `verify` to pass in the signature and encoding, instead of `sign` to get the signature. This step is not required, but it's useful to check when implementing your signature code. This helps debug issues with signing before sending transactions to Apple. If verification succeeds, the next recommended testing step is attempting a purchase in the Sandbox environment. */ const verificationResult = key.createVerify('SHA256').update(payload).verify(signature, 'base64'); console.log("Verification result: " + verificationResult) // Send the response. res.setHeader('Content-Type', 'application/json'); res.json({ 'keyID': keyID, 'nonce': nonce, 'timestamp': timestamp, 'signature': signature }); }); module.exports = router; Postman request and response Request URL: http://192.168.1.141:3004/offer Request JSON: { "appBundleID":"com.app.bundleid", "productIdentifier":"subscription.product.id", "offerID":"OFFERCODE1", "applicationUsername":"01234b43791ea309a1c3003412bcdaaa09d39a615c379cc246f5f479760629a1" } Response JSON: { "keyID": "KEYIDXXXXX", "nonce": "f98f2cda-c7a6-492f-9f92-e24a6122c0c9", "timestamp": 1753510571664, "signature": "MEYCIQCnA8UGWhTiCF+F6S55Zl6hpjnm7SC3aAgvmTBmQDnsAgIhAP6xIeRuREyxxx69Ve/qjnONq7pF1cK8TDn82fyePcqz" } Xcode Code func buy(_ product: SKProduct) { let discountOffer = SKPaymentDiscount( identifier: "OFFERCODE1", keyIdentifier: "KEYIDXXXXX", nonce: UUID(uuidString: "f98f2cda-c7a6-492f-9f92-e24a6122c0c9")!, signature: "MEYCIQCnA8UGWhTiCF+F6S55Zl6hpjnm7SC3aAgvmTBmQDnsAgIhAP6xIeRuREyxxx69Ve/qjnONq7pF1cK8TDn82fyePcqz", timestamp: 1753510571664) let payment = SKMutablePayment(product: product) payment.applicationUsername = "01234b43791ea309a1c3003412bcdaaa09d39a615c379cc246f5f479760629a1" payment.paymentDiscount = discountOffer SKPaymentQueue.default().add(payment) } Issue Even following instructions to the documentation and attempting various combinations, the offer keeps failing with SKErrorCodeDomain error 18. Has anyone else experienced this? Any suggestions as to what may be amiss or how it can be corrected?
1
0
107
Jul ’25
NotSupportedError, The payment method is not supported
What am I missing in my checking for whether or not to offer Apple Pay on my website? <script async crossorigin src="https://applepay.cdn-apple.com/jsapi/v1.1.0/apple-pay-sdk.js" ></script> ... <style> apple-pay-button { display: none; } </style> ... <apple-pay-button buttonstyle="black" type="plain" locale="en-US" onclick="startApplePay('${APPLE_PAY_MERCHANT_ID}','${paymentForm.amount}');"></apple-pay-button> So, the button is not displayed by default. I only change the style to displayed if: window.onload = function() { if (isApplePaySupported()) { document.querySelector("apple-pay-button").style.display = "inline-block"; }; } function isApplePaySupported() { return (window.PaymentRequest && window.ApplePaySession && ApplePaySession.canMakePayments() && ApplePaySession.supportsVersion(applePayVersion)); } Yet, once in a while a click comes through that tries to create a PaymentRequest with const applePayMethod = { "supportedMethods": "https://apple.com/apple-pay", "data": { "version": applePayVersion, "merchantIdentifier": merchantIdentifier, "merchantCapabilities": [ "supports3DS" ], "supportedNetworks": [ "amex", "discover", "masterCard", "visa" ], "countryCode": "US" } }; and results in: NotSupportedError, The payment method is not supported What else might be "not supported" in the request for this particular user/device/wallet? In particular, that could be known immediately when the PaymentRequest is created, but before any payment instrument from the wallet is selected? And, is there anything I could detect before showing the button? Or, is it even possible for the button to be clicked by some kind of automation, even if it's not displayed?
1
0
94
Apr ’25
Apple Pay - Missing ECIIndicator in PassKit Payment token
Hello, I'm using PassKit with to perform Apple Pay payment in a financial application. Our approach are: On iOS application, define PKMerchantCapability threeDSecure and credit, perform apple pay experience and get the encrypted response. On PCI service, receive the encrypted data Payment token, decrypt this data, and use to perform the payment. The problem is, in MasterCard transaction the eciIndicator is missing. I want to know if has some rule or problem about it.
1
0
246
2d
When using Promotional Offers to upgrade a subscription, a prompt appears indicating an expiration date for upgrading.
Two subscriptions, Plus and Max, are under the same subscription group, with Max having a higher tier than Plus. Promotional Offers for Max are configured in Apple Store Connect. When a user subscribes to Plus and then upgrades to Max using Promotional Offers, they are prompted with "Upgrade upon expiration" (Figure 1); if they don't use Promotional Offers, they are prompted to "Upgrade immediately" (Figure 2). Question 1: What is the situation with the "upgrade upon expiration" message in Figure 1? Is upgrading using Promotional Offers special? I couldn't find any relevant explanation in Apple's technical documentation. Question 2: Figure 1 shows an "upgrade upon expiration," but after subscribing, the webhook still shows the subscription start time as the current time, meaning the upgrade hasn't started immediately. Is the message incorrect?
1
0
81
Dec ’25
Issuer Functional Requirements Apple Pay Specifications Version 3.5
I'm seeking clarification on how Requirement 4.1 ("Card Issuers with a Mobile App must support In-App provisioning") applies when the card issuer uses a third-party mobile banking platform rather than a self-developed app. Our situation: We are a small credit union (the card issuer) Our mobile banking app is provided by a third-party digital banking vendor (white-label, but branded with our name) Card processing is handled by a separate vendor The ambiguity: The Apple Pay Specifications define "Card Issuer Mobile App" as: "The Card Issuer-branded, iOS software application made available on a Device that is used by such Card Issuer's customers to manage, administer, or use Cards." Our mobile banking app meets this definition—it's branded with our name and used by our members to manage their accounts and cards. However, we don't develop or directly control the app; our digital banking vendor does. The webinar FAQ stated: "Do we have to implement in-app provisioning? Yes, if you have an app." Our digital banking vendor interprets this as not applying to them because they are "not the issuer." They've stated: "Apple's requirements are at the card-processor level... our credit unions and, by extension, we are not required to support Apple Pay's in-app provisioning." Our card processor has indicated they will support in-app provisioning integrations but notes "this would be digital provisioning and we would need the digital banking vendor to work with us to enable." Specific questions: When a card issuer uses a third-party mobile banking app (branded for the issuer but developed/maintained by a vendor), does Requirement 4.1 apply? If yes, who bears compliance responsibility—the issuer, the mobile app vendor, or both? If the mobile app vendor does not implement in-app provisioning by January 15, 2026, what is the issuer's exposure? Does the issuer face suspension from the Program due to vendor non-compliance? Is there an alternative compliance path under Requirement 4.8 (Web Provisioning) for issuers whose mobile app vendors cannot deliver in-app provisioning by the deadline? This scenario likely affects hundreds of small financial institutions using shared digital banking platforms. Clarity on vendor vs. issuer responsibility would help the entire ecosystem prepare appropriately. Thank you.
1
2
327
Dec ’25
Not receiving any App Store Server Notifications when upgrading Monthly -> Yearly subscription
Scenario User is actively subscribed to Monthly Package From the Device App (Manage Subscriptions), user upgrades to Yearly Package Purchase completes successfully on device Issue Do not receive any server notification for this action Month Package Purchase Date: 2025-11-11 19:06:45.537 +0600 Month to Yearly Upgradation Date: 2025-12-11 paymentReferenceId: 510002270528780
1
0
85
Jan ’26
Unable to re-verify Merchant Domain
Hi, we are trying to verify our domain and we uploaded the file to our domain {DOMAIN}/.well-known/apple-developer-merchantid-domain-association.txt and we can access it. But when we want verify the domain in your platform we can't do it and you see the message "Domain verification failed". How can we verified or if we need change something in our side to verify it? thanks!
1
0
74
Mar ’25
Payment Services Exception Unauthorized
We’re attempting to call the Apple Pay Web Merchant Registration API using our Platform Integrator flow and consistently receive 401 Unauthorized, despite successful TLS/mTLS. Details: Endpoint: https://apple-pay-gateway-cert.apple.com/paymentservices/registerMerchant (POST) Payload: { "domainNames": ["breakerfy.com"], "encryptTo": "platformintegrator.ai.packman", "partnerInternalMerchantIdentifier": "merchant.ai.packman.1", "partnerMerchantName": "breakerfy", "merchantUrl": "https://breakerfy.com" } Domain association: URL: https://breakerfy.com/.well-known/apple-developer-merchantid-domain-association What we tried: We created a Payment Platform Integrator ID (platformintegrator.ai.packman) We created a CertificateSigningRequest We used the certificate signing request to create an Apple Pay Platform Integrator Identity Certificate and downloaded the signed certificate. We exported the Private Key from keychain access in PKCS 12 format We converted both the private key and the signed certificate to PEM format We created a merchant id We used the converted keys to send requests to the API We received { "statusMessage": "Payment Services Exception Unauthorized", "statusCode": "401" } we also tried curl with the original p12 file and also had no luck. What could be the issue ?
1
0
151
4w
Ngrok proxy for local development not working
Hello, I'm trying to make changes to my website's apple pay flow and an unable to verify if the flow works because I get the following error in the console when trying to pay: TypeError: undefined is not an object (evaluating 'applePaySession.completeMerchantValidation') By following this error message, I try to setup an ngrok proxy to verify my local development domain and that fails as well even though as you can see, the file does actually exist. Can anyone help with A) giving me a different way to develop locally aka having a "successful" apple pay payment so I can verify my website's flow after payment or B) help me figure out why the domain verification is failing. Thanks!
1
0
57
3w
Wallet error
I've completed the setup required for in-app push provisioning on the iOS platform. Encountering an issue at the completion handler step while sending data back to the PassKit framework. The delegate method used is: func addPaymentPassViewController(completionHandler handler: @escaping (PKAddPaymentPassRequest) -> Void) The error observed is: Error Domain=PKPassKitErrorDomainCode=2 which is PKUnsupportedVersionError The device used for testing is running iOS version 17.4.1.
1
0
76
Apr ’25
Clarification on Apple Pay Domain Verification File Behavior
I'm implementing Apple Pay in my Flutter web app and I'm following the guidelines for domain verification using the apple-developer-merchantid-domain-association file. When I access the file at https://mydomain.com/.well-known/apple-developer-merchantid-domain-association through my web app, the browser silently downloads the file instead of displaying its content on the webpage. My question is: Is this the expected behavior for the apple-developer-merchantid-domain-association file? Should the browser download the file silently, or is there another step required, such as displaying the content on the webpage for verification purposes? I've consulted some resources and they indicate that the file download is the correct behavior. However, I'd appreciate confirmation from the community to ensure I'm implementing the verification process correctly. Summary is how do we know if apple has verified it?
1
0
295
Aug ’25
Apple Pay Domain Reverify Failed
We are attempting to integrate the Apple Pay service into our website and have successfully verified our domain with Apple manually. However, we consistently receive an 'ApplePay reverify failed' email a month before the expiration time. Upon checking, we updated the SSL certificate for the domain before receiving the email, and the link still works fine in the browser. We would greatly appreciate any feedback from someone who can help us with this issue.
1
0
157
Oct ’25
Card details in the Wallet app shows as "Something went wrong. Try again later"
I'm encountering an issue with Apple Pay on both Wallet and the Watch app where the app name is not showing up on the back of the payment card(Card details). The pass was successfully provisioned, and everything seems to be working, but the expected app name or brand isn't displayed, and instead, I see the generic "Something went wrong. Try again Later" message. Do we need to configure something to get this displayed in Wallet app?
1
0
97
Apr ’25
Issue with the ApplePay SSL server certificate
Hi support, Since June 26th 2025 we are experiencing an issue with the ApplePay SSL server certificate installed on our servers in Production environment. We are facing an exception error during the initializing of a payment session while calling the url: https://apple-pay-gateway.apple.com/paymentservices/startSession The exception is Untrusted Server Certificate Chain: javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: Untrusted Server Certificate Chain       at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)       at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1915)       at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:306)       at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:300)       at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1577)       at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:213)       at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1010)       at sun.security.ssl.Handshaker.process_record(Handshaker.java:946)       at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1034)       at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1343)       at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1370)       at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1354) It seems that the issue occurs randomly: we are experiencing this exception on most of our payment transactions, but there are some cases of users that have correctly paid on our site using this method and in those cases this error did not appear. We installed the new certificate on our servers on July 3rd 2025 and renewed on Aug 7th 2025. The new certificate validity is: Not Before: Aug 6 18:43:52 2025 GMT Not After : Nov 4 18:08:57 2025 GMT I must specify that this issue is blocking the correct placement of AppleyPay orders of our customers. Can you please help us find the problem and a possible solution?
1
0
180
Aug ’25