The terminal has to decides either to proceed the transaction offline, to go online or to reject the transaction. The Terminal will send the decision with a Generate AC command to the card.
The decision is based on the Transaction Verification Results. There are several lists called Issuer Action Code (IAC) and Terminal Action Code (TAC) which give a directive to evaluate the TVR.
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IT Admin-G
The decision is based on the Transaction Verification Results. There are several lists called Issuer Action Code (IAC) and Terminal Action Code (TAC) which give a directive to evaluate the TVR.