how to calculate working balance

Hi,
I need to know how working balance is calculated, and where are future debits stored.
thanks for your help

If you have set up for Available funds then you can see the update of available ladder in ACCOUNT record itself in fields AUTH.DEBIT.MVMT or UNAUTH.DEBIT.MVMT (Note it's based on set up).

In ONLINE.ACTUAL.BAL, the debit balance is updated. All other balances gets updated on the value date during COB in SOD.

Working Balance is the balance at the start of the day plus all authorised and unauthorised.

Forward entries will be added to working balance at the start of the respective days.

There are several tables that might be what you're looking for. Try FBNK.FWD.ENTRY.

thanks to all of you for your answers

in fact, I have an account that has working.balance different from ONLINE.ACTUAL.BAL but there are no unauthorised entries for that account.
I want to locate the transaction that created the difference , and I hope it is stored in some temp table or concat file, or just somewhere.
I even tried ENTRY.HOLD, but there is no reference for my account.

Thanks again

further to the post by Mr.Durai. The working balance is the difference between ONLINE.CLEARED.BAL and any unauthorized debits and credits to an account. The balance is shown in the field WORKING.BALANCE in the account application.

Forward entries might affect this balance. Look for transactions in the future.

Have you checked ACCT.ENT.FWD?

Also if I am not mistaken there is a file RE.CONSOL.STMT.ENT.KEY, with ID as CAL key and processing date, under that entries are stored.

You can get the CAL key of the account from ECB.