While the actual length of a credit card number varies by the credit card company it must follow a specific identification protocol as outlined by ISO.
ACH payments are electronic payments that are created when the customer gives an originating institution, corporation, or other customer (originator) authorization to debit directly from the customer's checking or saving account for the purpose of bill payment.
ACH Terms and Definitions Terms and Definitions. ACH - Automated Clearing House An organization formed by financial institutions using a computer-based facility to settle automatic payment and deposit transactions among financial institutions in a given geographic area. ACH Debit Term used to describe a pre-authorized withdrawal, which will be deducted from an account as an EFT transaction. ACH Rule The required rules and regulations that each financial institution must follow that govern the ACH network. These rules are set by NACHA. ACH Stop Payment