balance c/f diff in fbl3n and fs10n

Hi SAP GURUS,

I am checking one open line item manged gl account . When i check balance for 2008 in fbl3n with open line item it is showing 100,000 balance and when i am checking balance in fs10n for the year 2008 it is showing the same. Bur if I am checking fs10n it is showing balance brought forward from 2008 as only 50,000.

Why this difference in closing balance and balance c/f is coming.

Please help to resolve this issue.

CHEERS