Are you (or your customer) implementing SRM7? Have you tried to figure out if you should use the newer technique, call Process-Controlled Workflow (PCF), or stick with the evergreen Application Controlled Workflow(ACF)? Well, I am.
I understand that there are benefits to both. SAP advises customers to move on to PCF, where the workflows are enabled via the IMG, and customer-specific functionality is added thru BADIs. But there are provisions made to enable customers to stay with ACF.
The main drawback to PCF (as I understand it) is that once you make that switch, you can not go back. So if you get 75% thru your development, and realize that <oh rats> you need to be able to do something that is only available in ACF, then that's too bad.
If you are upgrading and have a working workflow system, you may be able to convert some of that to PCF, but probably not all. Will you throw away and start over?
So I think some customers may be hesitant to make this change.