Action Type: Indicates if the voucher was Created, Altered, or Deleted.
This is the #1 reason. Tally Prime records changes only if you explicitly turn on the audit.
Masters include Ledgers (Customer/Supplier names), Stock Items, and Groups. To see who created or altered a ledger:
Altered values are highlighted in red text . 18;write_to_target_document7;default0;4c0;18;write_to_target_document1a;_wWntaePMJragnesP3LX2sAM_20;2a; 2. View Edit Log for Masters 0;16;