E12019 — SMSAlphaRegistrationRequired
Alphanumeric senders require registration for the destination country. Register a sender for this country before sending.
- HTTP status: 422
- Type: validation_error
- Name: SMSAlphaRegistrationRequired
The public API does not return this code. It comes from Bird's other surfaces, such as the dashboard, the CLI, and the MCP tools, which link here when the error occurs.
What to do
Register an alphanumeric sender for the destination country, then send again once it is approved.
Related
- E12xxx — SMS sending & delivery: every code in this range
- Errors: the full wire contract, status mapping, and error catalog
- Error handling: branching on type and code, validation details, and vendor_code