Root Cause

• Issuer's system is temporarily unavailable: The card issuer's servers are down, preventing authorization of transactions.

• Network communication failure: The payment gateway is unable to establish a connection with the issuer's systems.

• Issuer undergoing maintenance or updates: Scheduled or unscheduled maintenance is affecting the issuer's transaction processing capabilities.

• High network traffic or system overload: The issuer's systems are overwhelmed with requests, leading to unavailability.

Troubleshooting and Solutions

• Ask the customer to retry the transaction after a short wait using the same card.

• We recommend switching to a different payment method or card if the problem persists.

• Monitor the payment gateway's status page for updates on outages.

• If this issue occurs frequently, raise a ticket to support@chargebee.com or the Payment gateway support team for further investigation.