During a verify or backup, QuickBooks detects a problem with the company file and tells you to rebuild the file. When you open the QBWIN.log file, you see one or several of the following errors:
LVL_ERROR--Error: Verify item history Target average cost mismatch error:
LVL_ERROR--Error: Verify item history Target value on hand mismatch error:
Important: Ensure that your QuickBooks is up to date before you follow the steps shown below.
Perform basic data troubleshooting to fix this issue. If the issue persist, please proceed to solution 2.
If your QuickBooks file is damaged, you can restore the Auto Data Recovery (ADR) copy of your QuickBooks file.