Police policy on SVI Cisco 3750

I'm trying to rate limit traffic from a couple of IPs in a VLAN (920). The traffic is incoming from 6 physical trunk ports. The VLAN 920 interface on this WS-C3750X-24P-S  is the default gateway in VLAN 920, the 3750 routes traffic to other VLANs.

I've created the policy as below, but I get this error when I try to apply it to the VLAN interface;

QoS: class(IdentifyPorts) Unsupported classification [Vlan920]

Service Policy attachment failed

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int range gi 1/0/1-3

mls qos vlan-based

int range gi 2/0/1-3

mls qos vlan-based

access-list 102 permit ip host 192.168.143.3 host 192.168.178.8

class-map match-any IdentifyTraffic

match access-group 102

class-map IdentifyPorts

match input gi 1/0/1 - gi 1/0/3

match input gi 2/0/1 - gi 2/0/3

policy-map Port-Policy

class IdentifyPorts

police 8000000 1000000 exceed-action drop

policy-map VLAN-policy

class IdentifyTraffic

set ip precedence 1

service-policy Port-Policy

int vlan 920

service WS-C3750V2-48PS-S-policy input VLAN-policy