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Online Authorization (OLA) is a system used to verify a transaction on a payment card (e.g. credit card). The term 'on-line' refers to the real-time nature of the verification. In other words, if the account is overdrawn, in most cases, the transaction will be refused.
OLA is already commonplace for credit card networks such as Visa or Mastercard and is now being implemented in others (such as fuel cards).
During on-line аuthorisation:
(The recrypt PIN block process is not included in list.)
The set of verifications performed by an issuer bank depends on the card type, payment system requests and features of the issuer bank's processing system.