---
title: "E28044 — AMBTemplateVariableUnexpected"
description: "parameters contains a variable the Apple Messages template does not define."
canonical: "https://bird.com/docs/api/errors/E28044"
---

# E28044 — AMBTemplateVariableUnexpected

parameters contains a variable the Apple Messages template does not define.

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

## What to do

parameters includes a variable this template does not define. Fetch the template to see the variable keys it accepts, then drop the extra ones from parameters and resend.

Operations that resolve this:

- [Get an Apple Messages template](/docs/api/reference/get-amb-template)

## Related

- [E28xxx — Apple Messages for Business](/docs/api/errors/E28xxx): 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)