Merge unwanted duplicate ledgers Duplicate Ledgers are created through a typo or oversight. When vouchers refer to them they can not be deleted easily. Manually opening all the vouchers that contain them and changing reference to correct ones is a laborious process. Here is a utility that makes the task easily. Steps Open Tally; Open some company. Open MergeDupLed Click Refresh Ledger List Select Duplicate ledger Click post
Merge Duplicate Item Steps Open Tally; Open some company. Open MergeDupItem. Click Refresh Item Lis. Select Duplicate, Item to be replaced with. Click post.
1. Ledger Vouchers / Stock Vouchers Report to find vouchers involved. Actually to get Dates as full Day book search is slow. 2. Voucher Register Report to get full details of the vouchers. I remember from earlier versions Day book though powerful has some limitation. It works only on CurrentDate. (Edited) 3. Alteration of individual voucher in Object mode. Here I export all details I got to avoid any side effect. Unfortunately I could not do this in Data mode.
Source for Merge Duplicate Ledger https://sourceforge.net/p/excel2tally/code/ci/master/tree/xmldb_ML.pas
I assume the message / exception was from Tally. Right? Do you have a large number of vouchers in a single day?