On-us Transaction

A transaction where the issuer and the acquirer are the same. An “on-us” check would be one in which a depositors check is presented for payment at the same financial institution that carries the account on which the check is written.

Online Financial Transaction

A transaction that is authorized, cleared, and settled in a single online message.

Open To Buy Amount

Currency amount of credit remaining for customer at the time of authorisation.

Order Number

A 17 character alphanumeric field that may be used between the Cardholder and the Merchant for accounting or tracking purposes.


This refers to a cardholders account that has surpassed its credit limit with a transaction.