QuickBooks Error 12007 is a payroll error that might appear while running the payroll of your employees. It might also happen while creating the backup of your file. The error can be resolved through the rebuild data utility to repair the company file. If you experience the error while running payroll, it means either an employee has been overpaid, or some payroll tax has been overpaid. You can resolve the error by managing the payment, and if you need help, contact at our 1.800.579.0391 and talk to experts. source : https://zumashare.com/2021/10/05/best-working-solutions-to-fix-quickbooks-error-12007/