---
title: "E17010 — ForwardingDomainUnavailable"
description: "This domain cannot get a mailbox forwarding address in this workspace."
canonical: "https://bird.com/docs/api/errors/E17010"
---

# E17010 — ForwardingDomainUnavailable

This domain cannot get a mailbox forwarding address in this workspace.

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

## What to do

Verify and assign the mailbox's domain to this workspace. If another workspace receives mail for the domain, ask your administrator to resolve that receiving setup before retrying.

Operations that resolve this:

- [List sending domains](/docs/api/reference/list-domains)
- [Get a sending domain](/docs/api/reference/get-domain)
- [Verify a domain](/docs/api/reference/verify-domain)

## Related

- [E17xxx — Agent mailboxes](/docs/api/errors/E17xxx): 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`

## Related resources

- [Should I use a Bird SDK or call the API directly?](/explained/platform/should-i-use-an-sdk-or-call-the-api-directly) (answer)
- [Build your first integration](/learn/paths/integration) (course)
- [Send your first email](/docs/get-started/send-your-first-email) (docs)

[Get an implementation brief](/learn/workspace?topic=api-basics)