---
title: "Transaction Error Message: Transaction declined (additional customer authentication required)"
description: Cardholder has failed 3DS verification Cardholder must pass 3DS verification
url: "https://trustprotects.me/faqs/transaction-error-message-transaction-declined-additional-customer-authentication-required/"
updated: "2023-08-08"
category: What to do when a Transaction is declined
---

# Transaction Error Message: Transaction declined (additional customer authentication required)

Cardholder has failed 3DS verification

Cardholder must pass 3DS verification