India Tax depreciation key & Fiscal Year Variant

Hi Gurus,

I am involved in fixed asset project in India, I have some doubts on tax depreciation. The rules under companies act for tax depreciation are divided into two categories.

1. The asset acquired before October will be depreciated @ 100% rate and a depreciation key with Written Down Method is required ( WDM) to define and assign to those assets.
2. The assets acquired after October will be depreciated @50% rate and another depreciation key with (WDM) is required.

    My question is how to assign a default depreciation key in the config. on asset class level that satisfy both the scenarios? When user creates an asset the depreciation key gets defaulted from asset class level and user don't need to assign it manually in AS01.  The other thing I need to clear is fiscal year variant , Our Indian company reporting requirement is from April-March fiscal year for tax depreciation where as our parent company uses fiscal year variant from November-December.

How to handle this fiscal year variant in asset config. for tax depreciation. Any input will be much appreciated.Thanks

Regards,

Iqtidar.