# E12016 — SenderCategoryNotPermitted

This sender's registration for the destination country does not permit messages of this category.

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

## What to do

Send a category this sender is registered for in the destination country, or register the sender for this category, 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`