tSapIngressFCName specifies the forwarding class or the sub forwarding class for which this mapping is defined. A sub forwarding class mapping can also be configured. The format of a sub forwarding class is the concatenation of the base forwarding class and a sub class identifier in the form base-fc-name[.sub-fc-name] A sub forwarding class mapping should exist in this table if any explicit match criteria in this SAP ingress QoS policy try to use it. However, it is not the same for the base forwarding classes.