I created a test user in access manager and added him to a role I created in the Cognos namespace.  When I tried to login with him, I got the following:  CAM-AAA-0056:  Unable to authenticate.
What am I missing??  I'm guessing it has to do with something on the access manager side but I can't think of what.
			
			
			
				Not sure if this helps, but take a look at this link:
https://www-304.ibm.com/support/docview.wss?uid=swg21371362
There are a couple of other articles on IBM's site that might help...