---
title: "E04077 — BroadcastParameterRequired"
description: "A used broadcast input has no value."
canonical: "https://bird.com/docs/api/errors/E04077"
---

# E04077 — BroadcastParameterRequired

A used broadcast input has no value.

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

## What to do

Supply a value at the field named by the error response's `param`. When `param` is under `template.parameters`, the value belongs there, even if the selected language's `template.parameter_overrides` entry has one, because an input the default language or the envelope uses needs its value in `template.parameters`. When the error names `/contact_id`, include the contact to preview with.

## Related

- [E04xxx — Email sending & delivery](/docs/api/errors/E04xxx): 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)