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21408: Message is blocked or permissions are disabled for the region indicated by the 'To' number

ERROR: 21408

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PROGRAMMABLE MESSAGING
ERROR

Description

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You have attempted to send an SMS or MMS to a region that has not been enabled in your account's Messaging Geo-Permissions(link takes you to an external page) settings. These settings exist to help you ensure you only send SMS or MMS to the countries or regions you operate in, and avoid unexpected charges.

Possible Causes

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  • You have attempted to send an SMS or MMS to a region that has not been enabled in your account's Messaging Geo-Permissions(link takes you to an external page) settings. These settings exist to help you ensure you only send SMS or MMS to the countries or regions you operate in, and avoid unexpected charges.

  • You have attempted to send a message to a region not supported by Twilio, such as traffic to recipients in Iran. For WhatsApp and RCS this includes all 'To' numbers that begin with the +98 prefix.

Possible Solutions

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If you wish to send messages to this region, please enable the relevant permissions on your account using the Messaging Geographic Permissions(link takes you to an external page) page.

Note: To align with evolving regulatory requirements, Twilio has stopped delivering voice, messaging, and email traffic to recipients in Iran starting March 15, 2025. Hence messages to Iran can't be resumed using Geo Permissions.