E12000 — SMSBackendUnavailable
The SMS service is temporarily unavailable. Please retry.
- HTTP status:
503 - Type:
service_unavailable_error - Name:
SMSBackendUnavailable
What to do
This is a transient error and needs no change to your request. Wait a few seconds and send again; if it persists, retry with exponential backoff.
Related
- E12xxx — SMS sending & delivery: every code in this range
- Errors: the full wire contract, status mapping, and error catalog
- Error handling: branching on
typeandcode, validation details, andvendor_code
Related resources
Continue with the documentation, guides and examples for this topic.