Hi Kishore,
If you have changed the depreciation key to "0000" and re run the depreciation then ideally there should not be any error.
If still error persists, you can consider shutdown the asset for the said period and then run depreciation.
After the dep run you can remove the shutdown indicator.
The following link may be useful to you.
http://scn.sap.com/docs/DOC-48685
Regards,
G.Sethuraman