The operational state of the file transfer.
inactive - Indicates that the RowStatus of this conceptual
row is not in the 'active' state.
pending - Indicates that the transfer described by this
row is ready to run and waiting in a queue.
running - Indicates that the transfer described by this
row is running.
success - Indicates that the transfer described by this
row has successfully run to completion.
failure - Indicates that the transfer described by this
row has failed to run to completion.