63009: Channel provider returned HTTP 5xx error. See Channel-specific error for details

Twilio returns this error when the underlying messaging channel provider responds with an HTTP 5xx error while processing your message. Check the channel-specific failure detail in ChannelStatusMessage, your StatusCallback payload, or the Message record to identify the provider response.

• The underlying channel provider returned a server-side error while Twilio was submitting the message.
• The failure occurred on WhatsApp, RCS, or another non-SMS messaging channel where Twilio surfaces channel-specific error details for failed deliveries.
• The provider is experiencing a temporary service issue. This is an inference based on the HTTP 5xx response class and the error description.

• Review the channel-specific error detail for the failed message. Look for ChannelStatusMessage in your StatusCallback payload or inspect the Message record for the associated error information.
• Open Programmable Messaging Logs in Console and inspect the Message Details page, Delivery Steps, and Request Inspector for the affected Message SID.
• If the provider-specific detail indicates a transient service problem, retry the message after the provider recovers. This recommendation is based on the provider returning an HTTP 5xx internal service error.
• If the issue continues, collect the affected Message SID values from the error logs and contact support so you can share the failed attempts and timestamps.

• Debugging Tools
• Programmable Messaging Logs
• Track the Message Status of Outbound Messages