An Issue is with depreciation amount on monthly basis

Hi SAP SMEs,

I need your views on below issue.

The asset is acquired on 19/06/2015 through the AUC and depreciation start date and depreciation key is also same for 2 areas.

But, when we run the depreciation report for one area system is showing the depreciation amount from period 1 on wards and other one is from period 06 onwards for year 2015.

Hence, I have gone through the asset master data and depreciation key configuration level, it seems no figure out as of now.

Any idea on this.

Thanks in advance.