The Fast Payment System (SBP) is a service with which you can make interbank transfers by mobile phone number. More than 200 banks, including the largest ones, are already connected to the system. SBP also allows you to pay for purchases, including by QR code and receive payments from organizations. Integration with the SBP helps to implement this. You can use standard amoCRM invoices, issue invoices, discount payment links to customers and customers will pay, while in amoCRM payments will drop, transaction statuses will change and the processes you need after payment will automatically start.