Intended for use when a temporary inactive upstream table row is created for the purpose of manipulating SCDMA parameters for an active row. Refer to the descriptions of docsIfUpChannelStatus and docsIfUpChannelUpdate for details of this procedure. This object contains the ifIndex value of the active upstream row whose SCDMA parameters are to be adjusted. Although this object was created to facilitate SCDMA parameter adjustment, it may also be used at the vendor's discretion for non-SCDMA parameter adjustment. This object must contain a value of zero for active upstream rows.