It was 1:17 AM. His client, Shanti Enterprises, had audited their books in TallyPrime (Release 11). The problem? Their new investor, a grumpy traditionalist named Mr. Mehta, refused to upgrade his ancient Tally.ERP 9 (Release 10). “If it isn’t broken, don’t fix it,” Mehta had barked over the phone. “Convert the data to Version 10 by morning, or the deal is off.”
He tried importing the cleaned CSV into Tally v10 using Import of Masters (Gateway → Import → Masters). The screen flickered. Then, the red error box appeared: “Invalid Format. Date field mismatch in Voucher Type ‘Sales’.”
“Converted to v10. No data loss. Opening balances verified.”
They matched. Down to the last rupee.
The answers were a graveyard of bad news.
He held his breath and imported the first TXT into Tally v10.
Arjun opened TallyPrime (v11) and began a systematic extraction. how to convert tally data version 11 to 10
“How to convert tally data version 11 to 10?”
By 4:45 AM, all masters and vouchers were in. He opened the Trial Balance in Tally v10. Then he opened the PDF from v11.
But there was a ghost: The opening balance for “Prepaid Insurance” was off by ₹12. He traced it to a journal entry in v11 that used an “Adjustment Period” field—a feature v10 ignored. He manually entered that ₹12 correction via a journal voucher in v10. It was 1:17 AM
On a separate folder, he installed Tally.ERP 9 (Release 10) – the target version. He created a new, empty company named “Shanti_Converted_v10.” Then he opened the Excel files. The v11 export had extra columns: Is GST Registered? , Bill-wise expiry dates , and a weird UDIMasterType that v10 would vomit on.
He remembered one more trick: Use a third-party tool as a bridge. Not the shady DLL, but a legitimate free tool: Tally Data Converter Lite by a small firm in Pune. He downloaded it (praying the free trial worked). The tool read his v11 export files, stripped away version-specific tags, and spat out a Tally v10 compatible .TXT file for each master and transaction.
Arjun groaned. He was losing the war.