diffrent trial balances in diffrent user ID

Hi Gurus

I have faced with a strange issue. Need your suggestion.

My issue is, when i am viewing Trial balance report in User id AAA, i am getting one balance report lets say rs 10000, if i view the same report using User id BBB i am getting another balance let say 9500 in the same production system. What would be the issue . Need your suggestion.

Thanks in advance.