I'm Using depreciation  for 15 yrs assets in decline method but the oodo reacts first 10 years in decline method balance five years it automatically takes straight line method.

How could i handle this?

Use case
Purchase value - 1382000

Salvage value - 69100 (Includes in Purchase value)

​So what i did is i have increased the original value to arrive the Book value [Purchase value + Salvage Value] = Book value 

Declining factor = 18.1

Date of purchase - 27/3/23 Put in use Same date

So in depreciation board reacts with for the first 10 years in decline method and balance 5 years it takes the straight line method. This will be creating problem for me 

Please help me how could i handle this in better way to arrive.
We have real time manual formula to arrive dep is [Min (Previous year depreciation value + Addition*Decline factor or Previous year depreciation value+Additions-Scarp value]