Wrongly posted asset depreciation for fiscal year

Dear Gurus,

The client wrongly posted the depreciation for the fiscal year 2014-15 till Jan ( posting period 10 ) as his fiscal year variant is V3 as per the Asset depreciation percentage value.

Now the client wants to change the same as per the companies act which is depreciation as per the Asset Useful life.

The client is following both Written Down Value and Straight Line Method for different Assets. The FI periods are opened only for the month of JAN and FEB which is period 10 & 11 Periods.

The Assets periods are opened for the 2014 and 2015,

So, I would be creation 2 depreciation keys one for the SLM AND WDV as per the new companies act. But how to correct the wrongly posted depreciation. Any help on this is really appreciated.

Regards,

RR