Learn how to fix 3000 status code errors in QuickBooks Desktop Point of Sale. Make sure to create a backup of your QuickBooks Point of Sale file and QuickBooks Desktop file before you perform these steps. This variation of 3000 status code errors appears when an employee is being inactive or the track data is not properly set up. QuickBooks Status Code 3000 error is one such which is encountered for defects with vendor/customer list elements.