> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fluz.app/llms.txt
> Use this file to discover all available pages before exploring further.

# cancelBulkOperation

> Cancel one of your bulk jobs, using 'Basic <API_KEY>'.

Cancel one of your bulk jobs, using 'Basic \<API\_KEY>'. Best-effort and irreversible: items not
yet started are cancelled, while items already running are allowed to finish and record their
results. Safe to call more than once — an already-finished or already-cancelled job is returned
unchanged. Returns not-found for a job id that is unknown or belongs to another application.

```graphql theme={null}
mutation {
  cancelBulkOperation(
    bulkJobId: UUID!
  ): BulkJob
}
```

## Arguments

<ParamField body="bulkJobId" type="UUID!" required>
  *No description provided in the schema yet.*
</ParamField>

## Returns

[`BulkJob`](/api-reference/types/bulk-job) — A submitted bulk job.