OSAV process step in SAP

Hi,

Can anyone please explain the OSAV t.code accounting entry process step.

I have uploaded my asset through AS91 (31.-3.2015), so once check the entry it's showing

AW01N

Asset Value - 100000 (Procured by Mar 2010)

Acc Ord Dep - 40000 (Mar 2010 to 31.03.2015)

NBV - 60000 (31.03.2015)

How to transfer this 60000 balance to 01.04.2015 as opening balance?

Please assist me, and more information able to upload current year asset through BDC/LSMW or need to update manual only.

Thanks & Regards,

Arumugam