Changing the EE's Entry Date After Payroll: Actual Entry Date After the Incorrect Entry Date 
Use
By using the two personnel action types Incorrect entry and Corrected entry, you can change an employee's entry date after they have been included in a payroll run and if the incorrect entry date lies before the employee's actual entry date. You can only perform a payroll correction run if you run these two actions one after the other.

When a new employee was hired, the entry date was set incorrectly to 01.01.98 although the employee actually started work at the enterprise on 15.01.98. This error only becomes apparent after the first payroll run for this employee. To correct the employee’s entry date in this example, you must perform the Incorrect entry and Corrected entry personnel action types one after the other. This is the only way of ensuring that the next payroll run deducts the extra amount paid by mistake to the employee.
Prerequisites
When an employee is hired using the personnel action type Hiring, an entry date is created in the system that does not correspond to the date on which the employee actually started working at the enterprise.
Activities
Information on the actions:
After you have performed both of these personnel action types, the employee has employment status 0 (left) for the period between the incorrect entry date and the corrected entry date. As of the corrected entry date, the employee will have employment status 3 (active). The following graphic illustrates the interrelationship between personnel action and employment status:

Both personnel action types trigger a retroactive accounting run back to 01.01.98. As a result, the extra amount mistakenly paid to the employee is deducted when the next payroll is run.

Do not make any other changes to the employee’s data when you run these personnel actions.