# E12003 — SMSNoEligibleSender

No eligible sender is available for this message. Supply a 'from' or configure a sender for this destination.

- **HTTP status**: `422`
- **Type**: `validation_error`
- **Name**: `SMSNoEligibleSender`

## What to do

Supply a 'from' sender, or configure a sender for the destination country, then send again.

## Related

- [E12xxx — SMS sending & delivery](/docs/api/errors/E12xxx): every code in this range
- [Errors](/docs/api/errors): the full wire contract, status mapping, and error catalog
- [Error handling](/docs/guides/errors): branching on `type` and `code`, validation details, and `vendor_code`