Updated endpoint to get order details.
/admin/api/2023-01/orders/{order_id}.json
Updated endpoint to get fulfillment order details.
/admin/api/2023-01/orders/{order_id}/fulfillment_orders.json
NB: The FulfillmentOrder resource represents either an item or a group of items in an order that are to be fulfilled from the same location. There can be more than one fulfillment order for an order at a given location.