Hi Mandar,
First check posting period of posted documents in special period, whether it is correct or not.
check whether line item management has been activated on this gl or not.
If you have new gl then deactivate classic gl
Financial Accounting New --> Financial Accounting global setting --> Tool --> Deactivate Update of classic general ledger (GLT0) --> deselect the indicator.
Use FAGLGVTR for Balance Carry forward if you have new gl, else use F.16 for the same.
thanks,
Aditya