Realex Payments

The Realex Payments addon connects Shopp to the Realex Payments Global Iris platform transaction processing for UK-based merchants. This addon for Shopp uses the Realex Payments RealAuth Remote XML API to provide a seamless onsite checkout process where the customer completes the entire purchase on your website.

Getting Started

You will need to apply for a Realex Payments processing account and an Internet Merchant Agreement (IMA) from your bank. It can take up to 3 weeks to secure a merchant account from your financial institution, so it is a process you should begin immediately. Your Realex Payments application can be processed while waiting for your merchant agreement.

Realex Payments Application

  • Apply for Realex Payments processing services
  • Complete the form and click the the Apply button.
  • Realex Payments will contact you with details and when your account is ready you will receive your Merchant ID, Shared Secret and Account Name.

Web Hosting Setup

Since the Realex Payments addon for Shopp uses an onsite checkout process, sensitive information (such as credit card numbers) may be entered on your website. In order to protect your customer’s information your website’s hosting service will need to be SSL Setup|setup to support SSL.

Additionally, you may be required to enable 3D Secure for your Realex Payments processing account. Shopp fully implements 3D Secure transactions through the Realex Payments RealMPI system.


  • Uncompress the add-on files
  • Upload the folder (directory) and all its contents to your Shopp add-ons folder (directory) under: .../wp-content/shopp-addons


To setup Shopp to use Realex Payments, login to your website’s WordPress admin and navigate to ShoppSetupPayments.

  • Payment Gateway
    Select Realex Payments from the Payment Gateway menu and click the Add Payment Option button.
  • Option Name
    Enter a custom label for the payment option as you would like it to appear on your store front (such as Credit Card)
  • Supported Cards
    Select the payment cards your site will accept for processing
  • Realex Payments merchant ID
    Enter the Merchant ID from the email you received after setting up your account.
  • Realex Payments shared secret
    Enter the Shared Secret provided in the email you received after setting up your account.
  • **Realex Payments account*
    Enter the Account name provided in the email you received after setting up your account.
  • **Realex Payments refund password*
    Enter the refund password from your Realex Payments account in order to process refunds through Shopp.
  • Enable 3D Secure
    You can enable or disable the 3D Secure protection system for transactions processed through Realex Payments. This setting requires that 3D Secure is setup on your Realex Payments account.

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