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What does the service-policy is supported only on VIP interfaces with DCEF enabled message mean?

April 26, 2017enabled interfaces mean message supported VIP

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What does the service-policy is supported only on VIP interfaces with DCEF enabled message mean?

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A. On Versatile Interface Processors (VIPs) in a Cisco 7500 Series, only distributed Quality of Service (QoS) features are supported as of Cisco IOS 12.1(5)T, 12.1(5)E, and 12.0(14)S. Enabling distributed Cisco Express Forwarding (dCEF) automatically enables distributed QoS. Non-VIP interfaces, known as legacy Interface Processors (IPs), support central QoS features as enabled on the Route Switch Processor (RSP).