| Restricted country | Operations in this country are prohibited. |
| Restricted MCC | Prohibited category of business for operations. |
| Unauthroized MCC | Prohibited category of business for operations. |
| Restricted merchant category | Prohibited category of business for operations. |
| Invalid expiry date entered | An error in the expiration date of the card. |
| Card expiry check failed | An error in the expiration date of the card. |
| Invalid Expiry Date | An error in the expiration date of the card. |
| Invalid card security code (CVV) | Invalid CVV code, transaction rejected. |
| Invalid CVV | Invalid CVV code, transaction rejected. |
| Invalid CVV entered | Invalid CVV code, transaction rejected. |
| Security violation | Security breach, transaction blocked. |
| Security violation | Card seized due to suspected fraud. |
| Security violation | Transaction declined due to suspicious activity. |
| Declined | The transaction is rejected by the bank/program owner. |
| Failed | Error during payment execution. |
| Revoked | Authorization has been revoked. |
| Cash request exceeded | The amount requested exceeds the limit. |
| Cancelled | The operation has been canceled by the user. |
| Cardholder deceased | The card has been blocked due to the death of the owner. |
| Cardholder denies | The cardholder does not confirm the transaction. |
| Duplicate check | Attempting to swipe a check for a payment that has already been made. |
| Incorrect check | The data on the receipt is entered incorrectly. |
| Stopped check | The check transaction is stopped by the bank. |
| Voided check | The check has been canceled, the transaction is invalid. |
| Chargeback dispute | The transaction is disputed by the client. |
| Closed | The card or account is closed. |
| Magnetic stripe fraud | Suspicion of magnetic stripe card tampering. |
| Amount exceeded | The limit of available funds has been exceeded. |
| Fraudulent activity | Suspicious activity detected. |
| Merchant blacklisted | The merchant is on the blacklist. |
| Multiple declines from merchant | Several payment rejections from this seller. |
| No correct CVV verification from merchant | Seller’s CVV verification error. |
| Verification failed | Card verification failed. |
| Cancelled | The card or transaction has been canceled. |
| Card closed | The card is no longer active. |
| Card Blocked | The card is no longer active. |
| Card damaged | The card is damaged and cannot be used. |
| Card expired | The card has expired. |
| Fraudulent activity | Suspicion of fraudulent transactions. |
| Inactive card | The card is inactive or blocked. |
| Invalid card | The card number is invalid. |
| Lost card | Card lost, transaction declined. |
| Suspended card | The card is temporarily blocked. |
| Cryptographic error | Data encryption error during transaction processing. |
| Damaged card | Physical damage to the card interferes with operations. |
| Something went wrong | Unforeseen error during transaction processing. |
| Duplicate request | Attempting to resend the same transaction repeatedly. |
| Duplicate transmission | Re-transmission of payment data. |
| Duplicate transaction | Repeated attempt to make an identical payment. |
| Duplicate | The transaction had already been performed previously. |
| Error | General payment processing error. |
| Expired card | The card is invalid, expired. |
| Fraudulent transaction | Suspected fraudulent payment. |
| Incorrect PIN | Incorrect PIN code has been entered. |
| Invalid Pin | Incorrect PIN code has been entered. |
| Invalid PIN entered | Incorrect PIN code has been entered. |
| Insufficient funds | Insufficient funds in the account. |
| No sufficient funds | Insufficient funds in the account. |
| Invalid amount | Incorrect payment amount. |
| Invalid date | Incorrect transaction date. |
| Invalid EMV data | Error in the card chip data. |
| Invalid expiry | An error in the expiration date of the card. |
| Invalid merchant | The seller did not pass the security check. |
| Invalid PIN | An incorrect PIN code has been entered. |
| Invalid request | Invalid request format. |
| Invalid transaction | Erroneous or invalid operation. |
| Cancelled by issuer | The issuing bank canceled the transaction. |
| Law violation | Violation of law in the execution of a transaction. |
| Limit exceeded | The set limit on the card has been reached. |
| Missing data | The necessary data for the operation is missing. |
| Negative balance exceeded | The account balance has gone into negative overdrive. |
| No action | No action is required, the operation has not been performed. |
| No card | Card not found or not inserted. |
| No cash service | Cash withdrawals are not possible for this card. |
| Fraudulent activity | Suspicion of fraud, transaction denied. |
| No financial impact | The transaction does not affect the account balance. |
| No PIN assigned | No PIN code has been set for the card. |
| No PIN | The card does not support PIN code transactions. |
| Not delivered | The good or service has not been provided. |
| Not effective | The transaction is invalid at this time. |
| PIN already present | The PIN code has already been entered. |
| PIN tries exceeded | The number of attempts to enter the PIN code has been exceeded. |
| Restricted | Restriction on the execution of this operation. |
| Security error | Security Verification Error. |
| Special condition | Additional verification is required. |
| Stolen card | The card is listed as stolen. |
| Suspected fraud | Transaction blocked due to suspected fraud. |
| AML violation | The transaction violates anti-money laundering regulations. |
| Transaction not permitted | This type of transaction is prohibited for the card. |
| Transaction not reconciled | The operation was not successfully processed. |
| Unauthorized | Not enough permissions to execute the transaction. |
| Wrong PIN | Incorrect PIN code has been entered. |
| Wrong PIN maximum | The allowed number of PIN code entry errors has been exceeded. |