19057: Server unavailable or busy

This error indicates Twilio's API endpoint was temporarily unavailable or too busy to process the request. It commonly corresponds to transient server-side conditions such as HTTP 503 Service unavailable or an internal 500 Server error.

• A transient outage or degradation causing Twilio to return HTTP 503 Service unavailable for your API request.
• An internal Twilio error resulting in an HTTP 500 Server error.

• Retry the request with exponential backoff. Transient server or connectivity issues often resolve on subsequent attempts.
• If you expect spikes or sustained high usage, slow down request rates and monitor for ongoing incidents. We recommend adjusting traffic and following status guidance.
• Capture and log the Twilio-Request-Id response header for each attempt. Include it when contacting Support to expedite investigation.
• Optionally specify a Twilio Edge Location for API requests to keep ingress close to your infrastructure, which can improve resilience and latency.

• Twilio API responses
• API best practices
• Edge Locations