When the Card Type Handling field is set to Use Card No. Series, this field can be used to modify how many digits from the card PAN number are used when searching for the Card Type.
Note: If the PAN Number is masked with asterisks (***), the number digits might be determined by the first occurrence of an asterisk *. Example: If a PAN number is 123456******1234, then no more than 6 digits will be used.