Update an Item in an Order Edit

Update Order Item Quantity of Order Edit POST

Update an existing order item's quantity of an order edit. You can also use this API route to remove an item from an order by setting its quantity to `0`.

Remove Item from Order Edit DELETE

Remove an added item in the 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.