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Warning
Carrier error

32021: SHAKEN/STIR call verification failed

Twilio Elastic SIP Trunking DocumentationSIP Trunking
Twilio Voice DocumentationVoice

Description

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Twilio cannot verify incoming SHAKEN PASSporT from carrier

Possible causes

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See the error message for details

No action required. Incoming call to your Twilio number can still be established without STIR(Secure Telephone Identity Revisited) status.