---
title: "E17058 — MailboxLabelLimitReached"
description: "The workspace has reached its limit of 100 labels, so this one cannot be added."
canonical: "https://bird.com/docs/api/errors/E17058"
---

# E17058 — MailboxLabelLimitReached

The workspace has reached its limit of 100 labels, so this one cannot be added.

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

## What to do

Apply a label the workspace already uses. Read the conversation to find its mailbox, then list that mailbox's labels. To remove labels the workspace no longer needs and make room, contact Bird support.

Operations that resolve this:

- [Get a thread](/docs/api/reference/get-email-thread)
- [List a mailbox's labels](/docs/api/reference/list-mailbox-labels)

## 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)