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# INListCarsIntentResponseCode.failureRequiringAppLaunch

A response code that indicates the system must launch your app before you can provide a list of the user’s electric vehicles.

```
case failureRequiringAppLaunch
```

## Discussion

The system launches the host app when you specify this code. Use this response code when there is a failure that the host app can resolve. Don’t use this code for general errors, or to force a user into the host app even when the extension can handle the intent.

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