numeric or alphabetic rule that identifies a merchant account owner and the account records. AKA account rule.
1. Numbers, letters, or alphanumeric rule assigned to every significant consumer, provider, and lender for easy guide in an organization's bookkeeping documents. 2. Code which identifies the owner of a bank-account. Charge cards, including, have a 16 digit account number as specified by both MasterCard and Visa businesses. Also referred to as account rule.