# Authentication header missing

No `Authorization` header detected with your request.

---

## Example

```json
{
  "error": {
    "type": "request_error",
    "code": "authentication_missing",
    "detail": "Authentication header missing.",
    "documentation_url": "https://developer.paddle.com/errors/shared/authentication_missing"
  },
  "meta": {
    "request_id": "00000000-0000-0000-0000-000000000000"
  }
}
```

## Details

| Attribute | Value |
| --- | --- |
| Status code | 403 |
| Error code | `authentication_missing` |
| Error message | Authentication header missing. |

## Common causes

- You didn't include an `Authorization` header with your request.
- There may be a proxy between you and Paddle that's removing the `Authorization` header.

## Common solutions

- Use [Bearer authentication](https://developer.paddle.com/api-reference/about/authentication) when making requests to the Paddle API.
- Make sure that any proxies in use don't remove or change the `Authorization` header.