QuickBooks Error Code C=51 occurs when the application cannot find the TxList file, which users may encounter when trying to delete or remove a transaction. To resolve it, users can try closing all reports and the QuickBooks application and restarting the system. If the error persists, keep reading the blog to learn more about why it's happening and how to fix it.
Read more: https://www.axpertadvisors.com/fix-quickbooks-error-code-c51/