> ## Documentation Index
> Fetch the complete documentation index at: https://smartcar.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.
# Server
> If there is a server error, the user will return to your application.
| Parameter | Required | Description |
| ------------------ | -------- | ------------------------------------------ |
| error | true | server\_error |
| error\_description | true | Unexpected server error. Please try again. |
```http Example redirect uri theme={null}
HTTP/1.1 302 Found
Location: https://example.com/callback
?error=configuration_error
&error_description=There%20has%20been%20an%20error%20in%20the%20configuration%20of%20your%20application.&status_code=400
&error_message=You%20have%20entered%20a%20test%20mode%20VIN.%20Please%20enter%20a%20VIN%20that%20belongs%20to%20a%20real%20vehicle.
```
We only show the “Exit” button if a redirect URI is available. If there is a failure before the validation of the redirect URI, we are unable to include the “Exit” button on the Error page. In those cases, we would not be able to report the `status_code` and `error_message` back to the developer, but they will still be available on screen in the Error page.
