# gateway.identity_verification.invalid_pin_lock

> For the complete machine-readable documentation index, see [llms.txt](https://apidocs.chargebee.com/llms.txt).


**gateway**

The card has been locked due to multiple incorrect PIN attempts. The card issuer temporarily blocks the card to prevent fraudulent activity when too many invalid PIN entries are detected.

## Recommended Customer Message

Your card has been temporarily locked due to multiple incorrect PIN attempts. Please contact your card issuer's customer service to unlock your card.

## Root Cause[](#root-cause)

-   **Multiple incorrect PIN attempts:** The customer repeatedly entered an incorrect PIN, triggering the card's security lock.
-   **Issuer security policy enforcement:** The card issuer has locked the card temporarily to prevent fraudulent activity.
-   **Forgotten PIN:** The customer may not recall the correct PIN and exceeded the allowed number of attempts.
-   **ATM or POS lockout:** The card was locked through failed attempts at ATMs or point-of-sale devices.

## Troubleshooting and Solutions[](#troubleshooting-and-solutions)

-   Instruct the customer to contact their card issuer's customer service to unlock the card and reset the PIN if necessary.
-   Recommend using an alternative card or payment method to complete the transaction.
-   Advise the customer to avoid retrying transactions until the card has been successfully unlocked.
-   Ensure payment forms or devices clearly display authentication failure messages to avoid repeated incorrect attempts.