# ILocalDurableJobManager.CancelAsync(DurableJob, CancellationToken)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.durablejobs/orleans.durablejobs.ilocaldurablejobmanager/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.durablejobs/orleans.durablejobs.ilocaldurablejobmanager/methods/)

```csharp
public abstract Task<bool> CancelAsync(DurableJob job, CancellationToken requestCancellationToken)
```

Requests cancellation of a previously scheduled durable job.

### Parameters

- `job` (`DurableJob`): The durable job for which cancellation is requested.
- `requestCancellationToken` (`CancellationToken`): A token which cancels this request operation. It does not cancel a job execution attempt.

### Returns

A `System.Threading.Tasks.Task` representing the asynchronous operation. The result is `true` when the cancellation request was durably recorded, preventing future attempts; otherwise, `false`. An already-running attempt is cooperatively independent of this request and may still complete.

### Exceptions

- `System.ArgumentNullException`: `job` is `null`.