The Shopify Order Editing API is exposed via the GraphQL Admin API. The API establishes a new pattern that starts with a begin mutation, a series of edits, and then a commit. The orderEditBegin mutation creates a CalculatedOrder object that tracks all the changes that you make to the order. It allows you to make the following edits to an order that provides a way to; Add new variant line items, Add new custom line items, Remove line items and Alter line item quantities. Shopify provides services for merchants, that want to sell online, in-store, or anywhere. It is ecommerce solutions, such as, integrating your service into the Shopify admin, customizing any website, and more.