# UNSUPPORTED_MEDIA_TYPE

- Surface: API
- HTTP status: 415
- Details: `{ receivedMediaType: string | null, supportedMediaTypes: string[] }`

## Remediation

Send the request body with Content-Type application/json

## Cause

A mutating API request carried a body without the application/json media type.

## Fix

Set `Content-Type: application/json` before resending. Media-type parameters such as `charset=utf-8` are accepted.

## Related

- [VALIDATION_ERROR](https://splitch.dev/docs/error/VALIDATION_ERROR)

Source: https://splitch.dev/docs/error/UNSUPPORTED_MEDIA_TYPE