Hi Neehal,
I suggest you to consult your BW colleague with this requirement. He will be able to help you in getting the data upto Infocube in APO. Also search for existing SCN thread on similar topics, you will get much more information.
Data from that infocube can be loaded into APO Planning Area by using /SAPAPO/TSCUBE.
Hope this will help.
Thank you
Satish Waghmare