# E12077 — SMSRecipientSuppressed

This recipient is suppressed for this sender and cannot be messaged.

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

## What to do

A recipient is suppressed after texting a stop keyword to the sender, or after their carrier reported the opt-out. Only the recipient can reverse it, by texting a start keyword, so there is nothing to retry until they do.

## 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`