RT Constraint is supported only by the base router BGP instance. When the family command at the BGP router group or neighbor CLI context includes the route-target keyword, the RT Constraint capability is negotiated with the associated set of EBGP and IBGP peers.
ORF is mutually exclusive with RT Constraint on a particular BGP session. The CLI will not attempt to block this configuration, but if both capabilities are enabled on a session, the ORF capability will not be included in the OPEN message sent to the peer.