The CancelJob operation cancels an unfinished job.
You can only cancel a job that has a status of Submitted. To prevent a pipeline from starting to process a job while you're getting the job identifier, use UpdatePipelineStatus to temporarily pause the pipeline.
/// General authentication failure. The request was not signed correctly.
///
///
///
/// Elastic Transcoder encountered an unexpected exception while trying to fulfill the
/// request.
///
/// The resource you are attempting to change is in use. For example, you are attempting
/// to delete a pipeline that is currently in use.
///
/// The requested resource does not exist or is not available. For example, the pipeline
/// to which you're trying to add a job doesn't exist or is still being created.
///
/// One or more required parameter values were not provided in the request.
///