Return the key's customer's domestic shipment routings that are open for bids (Requested) or were awarded to one of the calling carrier's spot bids (any status; awarded_spot_bid_uuid names the winning bid), with the carrier's own spot bids nested in spot_bids. Filter on status to pick one set. Filter or sort on any routing column field, plus vendor.uuid|name and destination_distribution_center.uuid|name; fields aggregated from units and line items (pickup addresses, unit totals, POs, SKU categories) and spot_bids return 422.