In Tally Bank Ledger how to get reference number

Sir
1. In sundry debtors every debtor have reference number.
2. On receipt of Amount in Bank Letter posting being done to concern reference number.
3. In this process we able to get outstanding debtors balance with reference number.
4. Now my question is
How to get reference number in Bank ledger.
(even detailed ledger also not showing reference number.)
If we opt for narration it will appears.
In the same manner reference number required