Kington, UK -- (SBWIRE) -- 12/18/2020 -- In QuickBooks, the Transaction Log File or the TLG file is one of several files that QuickBooks creates whenever a company file is opened in a new place. The main file has the extension .QBW. The .QBW.ND file helps the QuickBooks Database Server manage access to the file. The .QBW.TLG file stands for Transaction Log, helps recover data in case the main file gets corrupted. Every transaction created in the company file are duplicated in the .TLG file as a kind of backup. It is recommended that the .TLG file be kept in the same folder as the QuickBooks company file, the .QBW file, at all times. If the .QBW file is moved or copied somewhere, the .TLG file should be copied with it.