It is a very long and confusing process, but in short, when a customer is ready to make a purchase, he enters his card details and then various transactions are made, which are redirected to the bank, where he himself approves them and then the money is debited. Therefore, in order for everything to go as it should, you need to fine-tune the payment system. And that is where you can help this company payment processing solution , because it deals with this at the professional level, and there are good professionals who know how to do, as well as how to set it correctly.