Fulfillment API

dsegal_maze
Shopify Partner
2 0 1

Hello Shopify developers,

Im looking to fulfill orders through the REST API. In order to do that, is it necessary to setup a FulfillmentService as listed 
here or can you make a single Fulfillment request? We are using a custom middleware to manage shipping and fulfillment for a single store and need to simply make a request to set an order as fulfilled with a tracking number.

I was planning to use this endpoint, passing the tracking info in the body as described here.

/admin/api/2021-04/orders/3664316235981/fulfillments.json

We only have one fulfillment and one inventory location. My understanding was that we could make a single Fulfillment request rather than setting up a FulfillmentService resource, but I want to make sure that this approach has not been deprecated.
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