Acceptor
Access point
Access right
Accounting Centre
Accounting transaction
Acknowledgement
Algorithm
Approval
Archiving
Assessment
Evaluation
Asymmetric algorithm
ATM card
ATM withdrawal
Attack
Audit trail
Authentication
Authorisation
Authorisation request
Automated clearing house (ACH)
Automated teller machine (ATM)
Availability

Authorisation request  

Request transmitted to the card issuer or its representative in order to receive its guarantee relative to payment or cash withdrawal transactions.