---
title: "Transaction Error Message: Transaction declined (format error)"
description: Issuing bank does not recognise transaction details being entered. Cardholder should check all details and reattempt, if decline continues, cardholder must contact their bank to rectify
url: "https://trustprotects.me/faqs/transaction-error-message-transaction-declined-format-error/"
updated: "2023-08-08"
category: What to do when a Transaction is declined
---

# Transaction Error Message: Transaction declined (format error)

Issuing bank does not recognise transaction details being entered.

Cardholder should check all details and reattempt, if decline continues, cardholder must contact their bank to rectify