Creates an order for a customer. The new order's status is draft. No payment is taken yet: to collect it, see 4 · Collect payment.

To take the payment in a form on your own website, send create_checkout: true with redirect_success_url and redirect_failed_url. The order is created as pending, and the response adds checkout and customer_portal_url. See Host a checkout on your website.

order_type sets how the customer pays. Each parameter says which order types it applies to. There's a request example for each type.