# E05017 — TrackingDomainNotConfigured

This domain has no link tracking configured.

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

## What to do

Configure a link tracking domain for this domain first.

Operations that resolve this:

- [Update a sending domain](/docs/api/reference/update-domain)

## Related

- [E05xxx — Domains & DNS](/docs/api/errors/E05xxx): 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`