Updates an order with a CREATED or APPROVED status. You cannot update an order with the COMPLETED status.
To make an update, you must provide a reference_id. If you omit this value with an order that contains only one purchase unit, PayPal sets the value to default which enables you to use the path: "/purchase_units/@reference_id=='default'/{attribute-or-object}". Merchants and partners can add Level 2 and 3 data to payments to reduce risk and payment processing costs. For more information about processing payments, see or .
Note: For error handling and troubleshooting, see .Patchable attributes or objects: