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Online & Authorization
Electronic Commerce Indicator (ECI) is a 2-digit value generated by payment schemes (Visa, MasterCard, etc.) in 3D Secure transactions to determine the transaction's security level (Full 3D Secure, Half 3D Secure, Non 3D Secure), and it varies by payment scheme.
ATM
Because the ATM is the channel where customers physically handle cash, fraud cases happen there very often. Here are the precautions you can take to use ATMs safely.
Merchant & POS
MCC stands for Merchant Category Code: a 4-digit code used to classify merchants by business type. Codes differ slightly between Mastercard, Visa, and BKM.
ISO 8583
DE 12-TIME, LOCAL TRANSACTION: the local time at which the transaction took place at the point of transaction (ATM, POS). 6 digits, hhmmss format. F12 differs from F7 (Transmission Date and Time).