Suddenly receiving error 21002 fro… (2024)

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Yes, we are seeing the same symptoms over here.

• Everything was fine a few days ago.
• We didn't change anything
• Same error (21002) from RevenueCat's tool
• Painstakingly bypassed any of our server-side or javascript code that is in any way involved.

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The status page now shows an outage for Receipt Verification - https://developer.apple.com/system-status/. Hopefully this will be resolved soon.

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Running into the same issue as well using both curl and our server receipt verification we get the 21002 response from https://sandbox.itunes.apple.com/verifyReceipt

Facing the same issue, Apple is aware of it and is reporting it as an outage in theSystem Statuses for developers

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It is probably connected to Upcoming changes to the App Store receipt signing certificate

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Ok, I took a receipt from Sandbox environment and extracted the certificates used to sign it. The last cert was Apple Root certificate, but the first 2 were the already expired intermediate certificates. Anything signed with those MUST fail after February 7. The part with "Not After : Feb7 21:48:47 2023 GMT"

Certificate:Signature Algorithm: sha1WithRSAEncryptionIssuer: C=US, O=Apple Inc., OU=Apple Worldwide Developer Relations, CN=Apple Worldwide Developer Relations Certification AuthorityValidityNot Before: Nov 13 02:15:09 2015 GMTNot After : Feb7 21:48:47 2023 GMTSubject: CN=Mac App Store and iTunes Store Receipt Signing, OU=Apple Worldwide Developer Relations, O=Apple Inc., C=US____________________Certificate:Signature Algorithm: sha1WithRSAEncryptionIssuer: C=US, O=Apple Inc., OU=Apple Certification Authority, CN=Apple Root CAValidityNot Before: Feb7 21:48:47 2013 GMTNot After : Feb7 21:48:47 2023 GMTSubject: C=US, O=Apple Inc., OU=Apple Worldwide Developer Relations, CN=Apple Worldwide Developer Relations Certification Authority____________________Certificate:Signature Algorithm: sha1WithRSAEncryptionIssuer: C=US, O=Apple Inc., OU=Apple Certification Authority, CN=Apple Root CAValidityNot Before: Apr 25 21:40:36 2006 GMTNot After : Feb9 21:40:36 2035 GMTSubject: C=US, O=Apple Inc., OU=Apple Certification Authority, CN=Apple Root CA

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Today I discovered that purchases were broken in one application:Response from appstore for transactionId '2000000***' : {"status":21002}

In other app purchases still work.Is this an Apple problem?

Ok, I tried using Restore Purchase item and it looks like the problem gets resolved (at least in sandbox!) with the help of certificate which is valid until Nov 17 20:40:52 2023 GMT. Looks like we'll have fun right before Thanksgiving day this time.

If someone is willing to check with production, I can provide 1 line of code and a couple terminal commands. Then those of us who had issues with production builds will have a way out... At least for the users who contacted us.

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I tried 100 times with the same receipt. It stills shows 21002 (Sandbox) and normal back and forth. tried 100 times but only a few get responses. Any idea?

We're still experiencing this issue in Sandbox. We're POSTing tohttps://sandbox.itunes.apple.com/verifyReceipt and we consistently get 21002. Production seems okay.

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DTS Engineer OP

Apple

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