---
title: "Invalid request"
description: "The request is malformed and was not executed."
lang: en
url: https://developers.bodo-app.com/en/problems/INVALID_REQUEST/
apiVersion: 2026-11-01
---

# Invalid request

The request is malformed and was not executed.

**Status 400** · `INVALID_REQUEST`

## Typical cause

The body is not valid JSON, too large or nested too deep, or a header has the wrong format.

## Way out

The `errors` of the answer name the field. Fix the request and send it again; repeated unchanged, it gets the same answer.

## Example response

**Example response**

```http
POST /v1/contacts

HTTP/1.1 400 Bad Request
Content-Type: application/problem+json
Content-Language: en

{
  "type": "https://developers.bodo-app.com/problems/INVALID_REQUEST",
  "title": "Invalid request",
  "status": 400,
  "instance": "/v1/contacts",
  "code": "INVALID_REQUEST",
  "requestId": "req_01JBD8Y3K5M7Q2W9X4Z6T1V0NP"
}
```

## Related

- [422 VALIDATION_FAILED](/en/problems/VALIDATION_FAILED/) · Validation failed
- [400 UNKNOWN_PARAMETER](/en/problems/UNKNOWN_PARAMETER/) · Unknown parameter

Read on: [Errors](/en/guides/errors/)