---
title: "E15006 — WhatsAppTemplateSlugReserved"
description: "Slugs starting with `bird_` or `wat_` are reserved, and a system template cannot be edited or deleted."
canonical: "https://bird.com/docs/api/errors/E15006"
---

# E15006 — WhatsAppTemplateSlugReserved

Slugs starting with `bird_` or `wat_` are reserved, and a system template cannot be edited or deleted.

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

## What to do

Two slug prefixes are reserved. `bird_` belongs to our built-in templates and cannot be used for a workspace template. `wat_` is the format of a template id, so a slug starting with it could never be told apart from an id, leaving the template unreachable by its own slug. Choose a slug that starts with neither, then retry. A built-in template cannot be changed or deleted; create your own instead.

## Related

- [E15xxx — WhatsApp sending & delivery](/docs/api/errors/E15xxx): 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)