Troubleshooting Payment Decline (Error Code 491)

💡 Quick Summary: Error 491 is a card security decline. It happens because our payment gateway uses 3D Secure (3DS) and requires 2-Factor Authentication (OTP).

🔍 Detailed Guidance

⚠️ Critical Alerts & Requirements

 


Revision #1
Created 7 June 2026 12:24:25 by Mithila Bandara
Updated 7 June 2026 12:24:37 by Mithila Bandara