Cancelling and Deleting Jobs
You can request that a job be cancelled before it is in the Packaging state by calling the Update Job Properties operation and setting the CancelRequested element to true. The job will be cancelled on a best-effort basis. If drives are in the process of transferring data, data may continue to be transferred even after cancellation has been requested.
A cancelled job will move to the Completed state and be kept for 90 days, at which point it will be deleted.
To delete a job, call the Delete Job operation before the job has shipped (i.e., while the job is in the Creating state). You can also delete a job when it is in the Completed state. After a job has been deleted, its information and status are no longer accessible via the REST API or the Azure Management Portal.