|Index||-||FAQ - Cart Help Buttons - Cart Settings - 4. Payment/Gateway Settings - Gateway Specific Settings|
Your WorldPay Installation ID. If you are not sure what this is. Login into the WorldPay Administration Server. You can find the Installation ID in the lower right hand corner of the screen.
This is also referred to as the Invisible Auth Password and requires that a Remote Admin installation is added to your WorldPay account. This can be achieved by emailing support [at] worldpay [dot] com with your company ID and requesting this (at no extra cost).