This is the most common reason. For security purposes, ICICI Bank automatically blocks your debit card if you enter the wrong ATM PIN three consecutive times. This is a safety measure to prevent unauthorized people from guessing your PIN.
Your blocked card details will be pre-populated; click "Proceed" . how to unblock my icici debit card
Here are the four most effective methods to get your card working again, ranked from easiest to most time-consuming. This is the most common reason