The configuration guidelines of QoS override are the following:
QoS override commands can be used only for the meters or policers defined in the SAP ingress policy.
QoS override commands are not allowed when the attached policy is of an exclusive type.
QoS override commands are not allowed on mirror destination SAPs.
QoS override commands are not allowed when ToD policy is attached to the SAP.
QoS override commands are not supported for ingress and egress QoS policies used with access-uplink SAPs and ports.