IBPF - Planning Tab Disabled

Hi Experts,

I am working on IBPF solution for our latest system S/4 HANA -1511 E.

I am able to retrieve correct data from back end S/4 system  through Analysis for Excel by using Query.

But when i change planning data & try to save / recalculate/ Lock it in AO for Excel - Planning Tab is disabled.

i checked all the possibilities on Excel settings for Add -on Services - all are as per Config document but even i am not enabling Planning tab in AO for Excel as below screen

Can any one having the idea what was missing & how to enable this tab for planned data?

Thanks,

Br,

Chandar