Unfortunately, "auto-correlation" (which means applying all the predefined correlation rules) cannot solve all the correlation problems in applications as far as Oracle doens't know all the applications.
And unfortunately, correlation is really key in building load test scripts and could be tricky sometimes without proper experience / training.
I've already posted some links to training materials (video, course on Oracle Learning and so on) you could maybe review.
I have also a set of word documents describing how to solve correlation issues in scripts.
Basically, the technique is : run twice and compare what has changed (use compare feature in report) and then create a variable to get the dynamic content from server response and replace the static value by the newly variable in client request.
So for EBS load testing,we can use auto correlation as it's Oracle's own application,right?
If you don't mind can you share the correlation documents that you've with me in my email.