Changes an order's lines, schedule and details. You can edit an order while it's waiting for payment: when its status is draft, pending or rejected.

1. Calculate a preview with the order as it should be.
2. Send the same body here, with the preview's figures added. Each parameter says which preview figure to send. The amounts you send are saved as they are, not worked out again.

Fields you leave out keep their current value, except tag_list and order_products_attributes, which are replaced. You can't change currency, customer_id or status: they're ignored if you send them.