Fulfill_Order_Pickups.cs

        public void Fulfill_Order_Pickups()
        {
            var orderResource = new Mozu.Api.Resources.Commerce.OrderResource(_apiContext);         
            
            var pickupResource = new Mozu.Api.Resources.Commerce.Orders.PickupResource(_apiContext);
            
            var fulfillmentInfoResource = new Mozu.Api.Resources.Commerce.Orders.FulfillmentInfoResource(_apiContext);
            
            var fulfillmentActionResource = new Mozu.Api.Resources.Commerce.Orders.FulfillmentActionResource(_apiContext);

            var filter = string.Format("OrderNumber eq '{0}'", "39");

            var existingOrder = (orderResource.GetOrdersAsync(startIndex: 0, pageSize: 1, filter: filter).Result).Items[0];

            var existingOrderItems = existingOrder.Items;

            var pickupItems = new List<Mozu.Api.Contracts.CommerceRuntime.Fulfillment.PickupItem>();

            foreach (var orderItem in existingOrderItems)
            {
                pickupItems.Add(new Mozu.Api.Contracts.CommerceRuntime.Fulfillment.PickupItem()
                {
                    ProductCode = orderItem.Product.ProductCode,
                    Quantity = orderItem.Quantity,
                    FulfillmentItemType = "Physical", 
                    //LineId = orderItem.LineId
                });
            }

            var pickup = new Mozu.Api.Contracts.CommerceRuntime.Fulfillment.Pickup()
            { 
                Items = new List<Mozu.Api.Contracts.CommerceRuntime.Fulfillment.PickupItem>(),
                 Code = "Custom-PickUp", 
                 FulfillmentLocationCode = "PVL-01"
            };

            pickup.Items.AddRange(pickupItems);

            var updatedPickup = pickupResource.CreatePickupAsync(pickup, existingOrder.Id).Result;

            var pickupIds = new List<string>() { updatedPickup.Id };

            var fulfilledShipment = fulfillmentActionResource.PerformFulfillmentActionAsync(
                new Mozu.Api.Contracts.CommerceRuntime.Fulfillment.FulfillmentAction()
                {
                    ActionName = "Pickup", 
                    DigitalPackageIds = new List<string>(),
                    PackageIds = new List<string>(),
                    PickupIds = pickupIds
                },
                existingOrder.Id)
                .Result;
        }