# Error Codes

Below is a list of errors that you can encounter:

* `Error 400`: The data you requested does not exist.
* `Error 401`: Unauthorized API Access.
* `Error 403`: Your query parameters are invalid. These will usually come with a more specific error message. See our [endpoints page](https://sequestor.gitbook.io/sequestor/endpoints) for more information on our query parameters.
* `Error 500`: Your API input triggered an uncaught error or there is a syntax issue. Please reach out to **<support@sequestor.org>** for help.
