I was able to configure ACS with AD successfully.
I was using my AD account to get connected and now I want to change it to system account I have created for that.
Each time I am trying to change username and password I can get through Test Connection phase successfully but when I am trying to save this configuration I got message:
The item you trying to delete is referenced by other items.
You must remove all references to this item before it can be deleted.
Anybody could help on that?
P.S. With my current connection to AD I also cannot see groups anymore.