Prashanth.
Amending the functionConfiguration will bring data in from the SAP system to the Nakisa application. You then need to map that all the way through to where you want to present it.
I'd perhaps start by taking a look at ...\AppResources\dataelementconfiguration\SAPEmployeeSearch_With_NineBox.xml
That's probably where your initial mapping wants to take place (you mentioned search in the initial posting). From there you'll need to work your way through the detaildataconfiguration and detailconfiguration files as a minimum I would have thought.
I've not modified the nine box myself but there's also a ...\AppResources\gridconfiguration\GridConfiguration_ninebox.xml file that looks like it might be worth a closer look.
There are also likely to be other files you might need to amend around presentation (XSL, etc.)
Nakisa applications behind the scenes are built on hierarchies of XML files. Hopefully you're comfortable working around and figuring out the hierarchy to apply this sort of change. If not, have you tried checking in AdminConsole to see if that will let you add in your additional field?
Regards,
Stephen.