Correction of wrong created asset with calculated depreciation

Hi Colleagues,

there has been created one asset in december 2013. In time of creating there has been settled wrong transaction type 100 ( external asset acquisition ). It has caused that depreciation is calculated in two depreciations areas 30 and 70. It should be in only one , in depreciation area 70.

I think , here be must be reversed depreciation in area which should be calculated and master data of asset must be changed that in future asset's depreciation goes correctly.

easily said, but it demands more steps in SAP. I work in SAP P4S.

Has someone had possibility to meet with this art of issue ?

Thanks a lot in advance for your response