This is the object's distinguished name (Dn) — the exact path in Cisco UCS Manager's Management Information Tree that addresses one specific instance of the egress traffic-shaping settings inside a QoS policy. This is the child object that actually carries the rate limit, burst size, and priority that get applied to outbound traffic on any vNIC or vHBA using the parent QoS policy. For example, this Dn might read something like `org-root/ep-qos-def-gold-video/egress`, which is the handle UCS Central or a script calling the UCS XML API would use to fetch this exact record rather than every Egress in the domain.