Found a very Useful Blog by Srinivasan Govindaswamy. and presented it in my way.
This Post describes how to configure SAP Enterprise Portal to point to multiple backend clients in ESS/MSS scenarios.
Business Scenario
It is possible to maintain
ESS/MSS landscape in a manner that allows multiple customers to be
implemented within multiple clients on the same system with a unique
Portal.
Below
scenario shows a portal pointing to multiple clients from the same
backend system containing ESS/MSS scenarios.
It is a pre-requisite that
the usernames in backend clients and portal should be the same.
In this
scenario, the users logged in to portal are able to access the backend
using SSO logon tickets.
Also, a Central User Administration (CUA)
as to be implement in the landscape, one system or one client can
dedicated for.
