Create Fulfillment : Object reference not set to an instance of an object.

[trevorjdaniel-max]

Hi,

I am attempting to create a fulfillment. I have followed your example code, and tried more complex but always get an error back.

Here is my code:

public class OrderManagement
{
    private readonly ShopifySharp.OrderService _orderService;
    private readonly ShopifySharp.FulfillmentService _fulfillmentService;
    private readonly ShopifySharp.CarrierService _carrierService;

    public OrderManagement(string baseUrl, string accessToken)
    {
        _orderService = new ShopifySharp.OrderService(baseUrl, accessToken);
        _fulfillmentService = new ShopifySharp.FulfillmentService(baseUrl, accessToken);
        _carrierService = new ShopifySharp.CarrierService(baseUrl, accessToken);
    }
    public async Task UpdateOrderAsync(long orderId)
    {
        ShopifySharp.Fulfillment fulfillment = new ShopifySharp.Fulfillment
        {
            TrackingCompany = "Jack Black's Pack, Stack and Track",
            TrackingUrl = "https://example.com/123456789",
            TrackingNumber = "123456789"
        };

        fulfillment = await _fulfillmentService.CreateAsync(orderId, fulfillment);
    }
}

The error is: "Object reference not set to an instance of an object." and " at ShopifySharp.ShopifyService.<>c__DisplayClass26_0`1.<<ExecuteRequestAsync>b__0>d.MoveNext()"

When watching Fiddler it appears to start to make a call to the Shopify API

This is what is being sent:

GET https://shop-unimals.myshopify.com/admin/api/2019-10/orders/2500263805033/fulfillments.json HTTP/1.1
Host: shop-unimals.myshopify.com
X-Shopify-Access-Token: shppa_redacted
Accept: application/json

it gets a response back from the API of:

{"fulfillments":[]}

and then throws the error.

Any help would be greatly appreciated!

[mattxo]

You must supply a LocationId in your fulfillment.

eg.

var fulfillment = new Fulfillment()
{
    OrderId = order.Id,
    LocationId = location.Id
};

You can get the LocationId from the LocationService https://github.com/nozzlegear/ShopifySharp#listing-locations