Order leg level constraints in network routing

Hi Team,

Morning , just wanted help regards the scenario below - forcing the Order Release Leg Constraints and trying to find the matching Network Leg using the Leg Classification

Order is from location a to location b, network itinerary having 2 network legs as below -

network leg1 from a to x (xdock) and leg_classification value - first_leg

network leg2 from x(dock) to b and leg_classification value - delivery_leg

network leg 2 is marked as primary

rates - on both the legs rates are there for carriers : y and z

forced the Order release Buy service provider constraint as - carrier y and also put order release leg level constraint with leg classification value - first_leg and service provider as y