With Shopify Order APIs, you can:

• Retrieve a list of incomplete checkouts.
• Display a fraud analysis and recommendations on the details page of an order.
• Allow merchants to manually create orders on behalf of customers. The order is saved as a draft in the Shopify admin until it's marked as completed.
• Create and update a store's orders. Each order is a record of a complete purchase that includes details of the customer, their cart, and any transactions.
• Create and retrieve transactions for an order. Transactions are created for every order that results in an exchange of money.
• Create and retrieve refunds for an order. Each refund is a record of money being returned to the customer. Use the calculate endpoint to make sure that any refund that you create is accurate.