The -6000 error family, which includes QuickBooks error 6147, is triggered when a user tries to restore a file backup to another computer system. In other words, this problem typically happens when you access your company's papers via the network. To solve this error follow these steps-
-Go to the folder that contains your QuickBooks company files first.
-Locate the QuickBooks.ADR folder now.
-Then locate the most recent ADR file by opening QuickBooks.ADR folder.
-Right-click the currently open file and select Rename to change the name to .qbw.
Read More: https://qberror.com/quickbooks-error-6147/