> ## 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. # User returned to application > This error occurs when a user leaves the Connect flow after hitting **Back to application** before granting your application access to their vehicle. | Parameter | Required | Description | | ------------------- | -------- | --------------------------------------------------------------- | | `error` | `true` | `user_manually_returned_to_application` | | `error_description` | `true` | The user exited Connect before granting your application access | There are cases where a user may wish to exit Connect before granting your application access to their vehicle. In these cases, if the user hits **Back to application** instead of closing out the window, Smartcar will return this error to your callback URI. Below are places in the Connect flow users can return to your application.