Root Cause

• Missing or invalid authorization code: The transaction request did not include a valid authorization code required for processing.

• Incorrect integration or system configuration: The merchant's payment system failed to supply the authorization code properly during the transaction request.

• Authorization code expired or invalidated: The provided code is no longer valid due to expiry or a prior reversal.

• Card issuer or processor did not generate a code: The initial transaction failed to receive an authorization code from the issuer, leading to incomplete processing.

Troubleshooting and Solutions

• Verify that the merchant payment system correctly captures and submits the authorization code during the transaction process.

• Ensure transaction flows are configured to handle and store authorization codes properly for subsequent processing steps.

• If the issue persists, contact the payment gateway for further assistance.

• Retry the transaction only after confirming that the authorization code is correctly generated and included in the request.