# Invalid Credentials

The credentials you used to make the request are invalid.

```json
{
  "type": "https://developers.sinch.com/docs/errors/registry/invalid-credentials",
  "title": "Invalid credentials",
  "detail": "The provided credentials are invalid. Use valid credentials from https://auth.sinch.com."
}
```

## Headers

This error also sends the accompanying authentication challenge header:

```json
"Basic realm=“Realm”"
```

## Troubleshooting

Ensure the credentials used are entered correctly and valid, and retry your request.