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21737: Brand Registration Failure: 2FA Verification Expired



ERROR: 21737

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PROGRAMMABLE MESSAGING
ERROR

The two-factor verification window expired before a response was received. A new request is required.

Possible Causes

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The verification link or token expired after the allowed duration without user confirmation.

Submit a new 2FA request using the API or Console and ask the brand contact to complete it within the active time window.