Depreciation calculation wrong for few assets in same asset class

Dear All,

I am facing a problem in depreciation calculation where in the cutover date was 31st May 2015 for the fiscal year cycle of Jan-Dec.The asset 16000462 original value was 1647 acquired on 01.04.2015 and ordinary dep posted for for year 2015 till May 2015 was 68.81.

The depreciation method is straight line 4 years.

The issue is that when i had posted the depreciation for the month of June in SAP , the system is calculation wrong depreciation.The values are coming as positive as 33.84 instead of -33.84.

The issue is only with few assets and other assets of same class is calculating the depreciation for the year 2015 correctly.

Please help me out in this issue urgently.