Why was my client redirected to their bank while attempting to make a payment with their credit or debit card?

Each digit on the card number has a purpose, and they are combined to form BINs (Bank Identification Numbers). Therefore, anytime a PSU (Payment Service User) enters their card data, we will send them to the bank for a simple bank payment if we can detect it and it is already integrated.

Otherwise, the PSU will proceed with the card payment flow.