My apologies if this simple question has been asked many times earlier - I couldn't find it if it is so.
I understand I can use user-mapping in single signon to map user X in portal to user A in backend system (say SAP BI).
Can I map users X, Y, Z..... to one backend user A?
What alternative I have (to let a number of portal users run some BW reports on the backend system - for which we want to use only one BI user-id)?