Create Fulfillment API Error "Not Found"

Products and Orders APIs
1

I’m trying to create a fulfillment in Shopify using the following request:

POST https://{{mystore_url}}/admin/api/2025-01/fulfillments.json
Request Body:

{
“fulfillment”: {
“line_items_by_fulfillment_order”: [
{
“fulfillment_order_id”: xxxxxxxxxxxxxxx (fulfillment_order_id)
}
],
“tracking_info”: {
“number”: “28691077xxx”,
“url”: “https://www.dhl.com/pl-pl/home/tracking/tracking-parcel.html?submit=1&tracking-id=28691077xxx”
}
}
}

However, I receive the following response:

{
“errors”: “Not Found”
}

My app has access to all fulfillment permissions

How can I fix the “Not Found” error?

2

I may be wrong but i think that

https://{{mystore_url}}/admin/api/2025-01/fulfillments.json

Can only be used for GET requests, to make a POST request i think tou will need to use Graphql ADMIN API, more specifically “mutation”