After running data damage troubleshooting, this error still shows in the Qbwin.log (the numbers in the error message may vary):
LVL_ERROR--Error: Verify Account List Item 313: Invalid parent 210, expected 212.
This error means that subaccounts in the Chart of Accounts (COA) are not indexing correctly.
To resolve this issue, first run basic data damage troubleshooting. If basic data damage troubleshooting does not resolve, continue with the following manual resolution steps.