I'm currently developing warehouse system for a customer who is already using Shopify store.
They are manually exporting and tracking orders.
I'm trying to add Shopify APIs to automate this process.
I already added order exporting(importing to my warehouse system) by order API
and I'm trying to use fulfillment order API to automate fulfillments.
I've read API documents and understood that fulfillment + order became fulfillment order.
I retrieved my customer's order, fulfillment and fulfillment order lists by using API.
I can see fulfillment list and order list, but no fulfillment order list.
What I am confused here is that does this customer is not using fulfillment order?
I've asked this to the customer, but they didn't exactly knew about this.
I thought I need to register Fulfillment Service and expose fetch_tracking_numbers, fetch_stock URL.
Is it going to work for the customer who doesn't have any Fulfillment Order lists.
