Hi Karthic;
Suppose you are logining into Fiori launchpad with userid "TESTUSER".
then find out the pernr corresponding to this ID in infotype 105. Table PA0105 will contain the required infromation.
Once your have the pernr with your then, In table KNVP, there should be customers present for this PERNR.
Also have you changed the parameters in the configuration table as shown by me in the last reply.
Regards,
Sarbjeet Singh