Fedex Shipment Interface Services, based on Ship Manager Direct XML API Sends a subscription request to FedEx to get the meter number, which is required for Fedex Ship Manager Direct as shipping credential. You must supply a contact name and a partyId (usually your company's with a valid address and phone number per Fedex requirements. Schedule a shipment route segment with FedEx. You will get back a label image and tracking number which are stored for you in the same ShipmentRouteSegment.