Hi Nirav,
You can check following threads :
http://scn.sap.com/thread/3371514
http://scn.sap.com/thread/3204682
http://scn.sap.com/thread/3178261
http://scn.sap.com/thread/2117543
http://scn.sap.com/message/10993654#10993654
You will most probably get an answer