Fulfillment API returns Not Found

Retired Boards Appdev Fulfillment Api
,
1 
Array
(
    [fulfillment] => Array
        (
            [line_items_by_fulfillment_order] => Array
                (
                    [0] => Array
                        (
                            [fulfillment_order_id] => $orderId
                            [fulfillment_order_line_items] => Array
                                (
                                    [0] => Array
                                        (
                                            [id] => $itemId
                                            [quantity] => 1
                                        )

                                )

                        )

                )

            [tracking_info] => Array
                (
                    [number] => $trackingNumber
                )

            [notify_customer] => 1
        )

)

I am trying to create fulfillment request with details with API /admin/api/2023-10/fulfillments.json’, $fulfillmentData, ‘POST’, but its returning not found in error.

I am stuck at this point. I am creating custom APP and trying to update details. I and sending orders to delivery agent and they are providing tracking number in return.

2 
[fulfillment_order_id] => $orderId

fulfillment_order_id and order ID are 2 different things - could that be the issue?

steps…

get the order_id

get the related fulfillment_order_id using order_id

add a fulfillment using the fulfillment_order_id

add events to the fulfillment using the fulfillment_id

https://shopify.dev/docs/api/admin-rest/2023-10/resources/fulfillmentorder

https://shopify.dev/docs/api/admin-rest/2023-10/resources/fulfillmentevent

3

Thank you, it works for me.