Merchant Support Integration API APIv4 documentation Important: To receive callback notifications after each payment, please define the URL under E-shop settings in the Portal. APIv3 documentation can be found here (EOL in 2022). Please do not integrate using the old API version. Last Updated: 4 months ago in Integration Did this article answer your question? Related Articles Credit transaction Test Sent for Processing status in demo environment Redirect customer back to eshop when the final status is still unknown Setting up LinkPay via Standard Books Payment method in Voog Setting up LinkPay via Directo