If a foreign based sundry debtor account has an opening balance consisting of various sales bills accounted in the previous financial year, it is possible to account the individual bill amounts with the Foreign Exchange rates in the books.
1. Go to Gateway of Tally > Accounts Info. > Ledgers > Alter .
2. Press Enter at Opening Balance to open the Bill-wise Details screen.
3. Enter the bill-wise amounts with the FE rates as shown below: