SubscriptionJS.finalize(success, error)

For interactive PSPs like PayPal this needs to be executed on the return page the PSP redirects to after finishing a payment. It triggers finalizing the order in billwerk. The success and error callback can inform the customer if the order succeeded or not.


Please note that you must never rely on the finalize page is ever called during the order process, e.g. a customer could close the browser after successful payment or something else happens. Always use our webhooks to be notified a subscription was successful.