> ## Documentation Index
> Fetch the complete documentation index at: https://developer.z-api.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Call rejection message

> Set the message sent after automatically rejecting a voice call

## Overview

Through this method you define the message that will be sent after rejecting a voice call received by the API.

<Warning>
  For the message to be sent, the previous method ([Reject calls](/en/instance/update-call-reject-auto)) must be enabled!
</Warning>

***

## Attributes

### Header

<ParamField path="instanceId" type="string" required>
  Your instance ID. Available in the Z-API panel under **Instances**.
</ParamField>

<ParamField path="token" type="string" required>
  Your Z-API instance token.
</ParamField>

### Body

<ParamField body="value" type="string" required>
  Response message
</ParamField>

***

## Request Body

```json theme={"theme":{"light":"github-light","dark":"poimandres"}}
{
  "value": "Response message"
}
```

***

## Response

### 200

```json theme={"theme":{"light":"github-light","dark":"poimandres"}}
{
  "value": true
}
```

### 405

Make sure you are correctly sending the method specification, that is, verify that you sent POST or PUT as specified at the beginning of this topic.

### 415

If you receive a 415 error, make sure to add the "Content-Type" header to your request, which in most cases is "application/json".