I am looking for literature or someone who has set this up and how well it is working.
I have a few clients that have tried to implement this. Most of them end up frustrated because the comission is always a straight percentage of the value of the item, customer, or by sales employee. There isn't really a way to do anything other that a straight percentage of the value of the sale (most of my clients define comission based on gross profit).
The help files in SAP are actually rather extensive regarding this. Have you taken a look at those?
I have and it is very general. Our commisson structure is quite diverse and right now we are manually calculating, thus looking to see what other companies are doing. When I had this conversation with our SAP Partner they did not have a good answer, nor had an idea to match our old system.
I've had a few clients explore the use of cost centers and cost allocations to track their comissions. Typically this requires you to put in a project code and an allocation code, so it's a lot of extra work. I imagine you're able to create significantly more complex comissions systems using that functionality. Of course, there is also the ability to create a crystal report or an XL reporter report that does all the math in the background.