The credit card decline code “12: Invalid transaction” generally means that the transaction being attempted is not allowed for the cardholder’s account. The response code indicates an issuer’s reason for approving or declining a transaction, and it is passed to mastercard in data element (de) 39 of the issuer’s network response message. The sale was rejected due to any number of issues (like when trying to reverse a charge).

Understanding the Context

Also known as the invalid transaction code, a credit card error code 12 is given when the issuing bank does not accept a transaction. That’s super vague, but it’s true. These codes provide additional information. Refer to card issuer.

Key Insights

The issuing bank is preventing the authorization of this transaction. The specific reason for this. A credit card decline code is the code that appears on a credit card processor when a transaction, or payment, has been declined. If you’re in a store and can’t get your. How can i fix error code 12 during credit card transactions?

Final Thoughts

To fix error code 12 during credit card transactions, ensure that you have entered the correct card details, verify. Response codes are defined in their respective services. Transaction was declined by processor. A processor decline indicates that the customer's bank has refused the transaction request. Sometimes you can tell why it was. The transaction response codes listed here are the most common codes and the recommended course of action.

For a complete list of the codes with their basic. A processor response code typically returned on declined recurring transactions. Its purpose is to provide merchants with information and specific instructions on how to handle. This code is often returned from the issuer when they do not accept the transaction.