Hi Pallavi,
By standard design, the follow up posting in the acquisition year will calculate depreciation from the depreciation start date. After the sedond year, depreciation starts from asset value date.
If you sum up all depr amount for year 2013, you will see:
Total = 833.33*6 + 2000 + 1000*5 = 12000
12000 comes from (100000 + 20000) * 10%, that means depreciation for the second posting of 20000 starts depreciation from 01.01.2013. So the system is calculating depreciation as expected.
If you'd like to have depreciation calculated from asset value date for the follow-up acquisition posting in the first year of asset capitalization, you'll need to flag field XBZDAT. Attached note 92925 for your reference.
Best regards,
Hannah