ePDQ Fact Sheets

These technical factsheets provide quick and handy reference guides with a range of information about using ePDQ.

Internet Authentication Service - The facts explained

The Barclaycard Business Internet Authentication Service is designed to help protect your business by reducing the risk of fraudulent online transactions. This factsheet provides top hints and tips concerning authentication processes, and suggests ways to avoid costly chargebacks.

• For more information download the fact sheet.

Passphrase mismatch

This fact sheet explains what a passphrase is, how it is used in the ePDQ system and why a mismatch may occur.

• For more information download the fact sheet.

Authorisation and pre-authorisation

This brief guides describes how, when you use ePDQ to accept a card payment on the Internet or for a mail or telephone transaction, you process the transaction. This means you collect the customers card details and ePDQ passes them on to us.

• For more information download the fact sheet.

Processing a new sale

This factsheet gives the steps to follow in order to process a new sale. You can use the transaction information to research customers buying patterns.

• For more information download the fact sheet.

Unable to read configuration file

If your customer gets an Unable to read configuration file message, it means the CPI cannot locate a configuration file for the Client ID specified in the ePDQ datastring. This factsheet explains what to do if such a message appears.

• For more information download the fact sheet.

Encrypted data not present

This factsheet gives the possible reasons for encrypted transaction data not being submitted to the CPI.

• For more information download the fact sheet.

Common ePDQ error messages

This is a guide to the most common ePDQ error messages encountered when integrating and using ePDQ, what they mean and what you should do when they occur.

• For more information download the fact sheet.

Full refund / partial refund

This guide shows the steps you need to take to issue a full or partial refund. A transaction management page will appear, confirming the refund. There are two types of refunds available. You can either refund an existing order, or you can create an independent refund.

• For more information download the fact sheet.

Mandatory information not present

The ePDQ CPI requires a certain amount of data from your website to be able to process a transaction. This factsheet describes the error that occurs when some of that data is missing.

• For more information download the fact sheet.

No data posted to ePDQ CPI

The ePDQ CPI requires a certain amount of data from your website to be able to process a transaction. This factsheet describes the error that occurs when none of that data is supplied.

• For more information download the fact sheet.

Not a valid allowed URL

The allowed URL is the full web address (including http://) of the last web page your customer visits before they are transferred to the ePDQ payment pages. It is usually the checkout page, and it transfers essential information to the ePDQ payment page, including details of the customers order. Find out more in this handy factsheet.

• For more information download the fact sheet.

Referred transactions

A referred transaction occurs when the card holders issuer cannot authorise the transaction straight away. Youll need to seek manual authorisation to complete the transaction. Find out more in this simple guide.

• For more information download the fact sheet.