This is the native 64-bit counter of valid CLP=0 cells in the egress direction of this channel counted after the traffic management entity, i.e. actually transmitted onto the wire. Comparing it to the pre-shaping cwacsHCEgrRcvCLP0 in a single 64-bit read shows how effectively high-priority egress traffic is being carried through without loss. A sustained shortfall between received and transmitted CLP0 counts would flag a shaping or capacity problem affecting priority traffic.