The following settings are required before you can change an employee number:
Ensure the employee is currently not in a draft pay run.
Under the user role, confirm you have permission to edit the employee.
Navigate to the employee details, update option, and edit the employee number.
If the employee has previously been processed in a pay run and a lodgment to the ATO via STP2 has been completed, you'll need to lodge an STP Update Event. Navigate to the STP Update Event under the Payroll tab.
For an employee who has never been processed in a pay run, no additional steps are required.