Dear Feng,
Thank You So Much for the reply.
I understand JBRX is the best one but 
.. business don't to use JBRX as it will calculate the NPV and display.
In our scenario Business is getting the NPV values for Securities from outside , they just want to store them.
Is it advisable to use Tcode : TPM73 or TPM74 to fulfill our requirement.
Regards,
Reenu John