I need help. I am taking over an application that currently processes transactions through Worldpay using what I assume is Litle OnlineRequest version 8.12.
I have been asked to start processing recurring payments. The document says I need to be on version at least 9.10.
I see that there is a 10.4 Litle XML Reference Guide online but even this guide was released Nov 2015.
If I am going to upgrade - what would be the easiest way to do this and what is the most updated XML that I could upgrade to with little effort. We are already processing quite well through our current version.