To set up Merchium with WorldPay payment gateway:

  1. In the administration panel, go to Administration > Payment methods.
  2. Click the + button on the left.
  3. Enter WorldPay into the Name text input field, select WorldPay in the Processor drop-down select box, enter necessary description or surcharge values into the appropriate input fields, upload an image if needed.
  4. Open the Configure tab in the same window in order to view WorldPay settings.
  5. Fill in the following fields, as follows in the Administration > Installation page of your WorldPay account:
    • Installation ID - your WorldPay installation ID number.
    • Payment Response Password - password used to validate a Payment Notifications message.
    • MD5 secret for transactions - your MD5 encryption key at WorldPay.
    • Test/Live mode - select Live mode. In order to use Test mode you need to select the Test: Approved value in this select-box.
    • Currency - select your currency.
    • Type - select the Fullauth type.

      Here you can find more information about these fields.


  6. Click the Create button to save the changes.