Ahh, I guess thats why I guess somewhere there was a mention of vendors making use of switchable framework, to introduce newer auth checks for increased security. I used SACF to define the scenario and made it a productive version, and used it in the method call of class CL_SACF. And did not resort to any user exits. I'd like to try the tcdcouples feature you mentioned. Thanks for the reply.
Pawan.