Fulfillment API returns error

[ironpro]

Hi there!

I have been trying to create a fulfillment via API for several days but it returns error.

{"errors":{"fulfillment":"Required parameter missing or invalid"}}

Here I attach the code. ( I am using Signifly/Laravel package )

    'fulfillment' => array(
        'message' => 'The order has been send',
        'notify_customer' => true,
        'location_id' => 61480337591,
        'tracking_info' => array(
            'number' => 5858371,
            'url' => 'dhl.com',
            'company' => 'DHL - Parcel'
        ),
        'line_items_by_fulfillment_order' => array(
            array(
                'fulfillment_order_id' => 6655267897673,
                "fulfillment_order_line_items" => array(
                    "id" => "14645454864713",
                    "quantity" => 1
                )
            )
        )
    )
);

$url = 'https://xxx.myshopify.com/admin/api/2023-07/orders/5618380079433/fulfillments.json';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

$res = curl_exec($ch);
curl_close($ch);

echo $res; 

The location_id, fulfillment_order_id, line_item_id are all correct since I got them via API before executing above code.

Since I couldn't proceed fulfillment_request API, tracking_info values are random ones at the moment.

[ironpro]

I've tried with real tracking information that had been created by merchant but it returned same error.

[Tipsa]

I have the same problem with the same error, if someone could help us I would greatly appreciate it

[Liam]

Hi Ironpro,

Was this same code working previously or is this a new implementation that you're building?

[ironpro]

Hi Liam.

This is the first time for me to implement.
We are building our own order management system using Shopify API.
Fulfillment implementation is just last step.

[Liam]

It's possible this could be happening because the "tracking_info" number is an integer, while Shopify expects a string. Could you switch to a string and see if the error is being returned? 

[ironpro]

Hi Liam!
Thank you for your help!
Yes, here I changed the number to string.

$data = array(
'fulfillment' => array(
        "location_id" => $rfill['assigned_location']['location_id'],
        "message"=>"The Jewllery Room fulfilled 1 item.",
        "notify_customer"=> false, 
        "tracking_info"=> array(
            "number" => "YMT29GRM",
            "company" => "GLS"  
        ),
        "line_items_by_fulfillment_order"=> array(
            "fulfillment_order_id" => $rfill['id'],
            "filfillment_order_line_items" => array(
                "id" => "14794802299209",
                "quantity" => 1
            )
        )
    )
);

so when I echo the json it shows as follows.

{
  "fulfillment": {
    "location_id": 61480337591,
    "message": "The Jewllery Room fulfilled 1 item.",
    "notify_customer": false,
    "tracking_info": {
      "number": "YMT29GRM",
      "company": "GLS"
    },
    "line_items_by_fulfillment_order": {
      "fulfillment_order_id": 6661985730889,
      "filfillment_order_line_items": {
        "id": "14794802299209",
        "quantity": 1
      }
    }
  }
}

And it returns error.

Response Code: 400
Response Body: {"errors":{"line_items_by_fulfillment_order":"expected Hash to be a Array"}}