Hi Santosh,
First check the details of SOH using transaction /SCA/DM_RESETINV - Reset Inventory to Zero (SMI,SNI). Usually the stock will be double if the inventory store at different characteristic levels..
IF your issue is due to this reason, then just delete the inventory and re run RSMIPROACT2 to update the correct inventory.
Hope this helps.
Thx
S.Rajasekhar