Core Admin APIDraft Orders
Remove Item from Draft Order Edit
Update New Item in Draft Order Edit POST
Update a new item that was added to a draft order edit by the ID of the item's `ITEM_ADD` action. Every item has an `actions` property, whose value is an array of actions. You can check the action's name using its `action` property, and use the value of the `id` property.
Add Promotions to Draft Order Edit POST
Add promotions to a draft order edit.