Hello,
???? Your quesition is not clear to me, but I try to help
Balance carry forward in SAP
I assume New GL is in use. If not other function has to be used.
1. Function FAGLGVTR for GL accounts
2. F.07 for customer and vendor accounts
You just have to run it for one time.
If you post in the past year system will adapt balance carry forward automatically.
You can take a look at the changes in the system.
Example for GL accounts
FS10n: for GL blances
There is no voucher available in the system. You can use functions for balances and sub ledger accounts to take a look at the balance carry forward.
You can report these values by using SE16n or SAP Quick Viewer/Query.
Hope this helps
all the best Erwin