63014: Channel message blocked by user action

Twilio returns this error when a message is blocked because the recipient took an action that prevents delivery. Check the channel-specific error details to identify the exact block reason and review the failed message in Messaging Logs.

• The recipient blocked the sender in the channel they are using, such as WhatsApp, so the message cannot be delivered.
• The recipient opted out or otherwise removed consent for future messages, which blocks later outgoing messages from that sender.

• Open the Messaging Logs entry for the failed message and use the MessageSid and error details to confirm the channel-specific block reason.
• Stop sending additional messages to that recipient until they re-engage or restore consent for the channel. If you use SMS opt-out handling, accept the relevant opt-in keyword again before resuming delivery.
• If you use WhatsApp, collect explicit opt-ins and respect opt-out requests so recipients do not block your business.

• Debugging Tools
• Advanced Opt-Out
• WhatsApp API