Indicates that the mutate operation was not processed. This could result if the job was aborted by the back-end workflow because the developer's API quota was exceeded or if the job encountered some severe workflow system failure.
Represents a failure result for a mutate operation that was applied in a transactional batch. It does not imply that the corresponding operation for this result itself caused the failure. To determine that, please see the FailureResult provided for the first operation of the batch.
