Do take note that you cannot change the employee’s payroll area for a period for which the employee’s payroll has already run. You can only change the payroll area at the end of the payroll period.
In Personnel Actions, PA40 :-
1. Input the Personnel Number
2. Select Organizational reassignment and click the execute button
3. Input the Start date for the reassignment
4. Click the save button and the Position Change screen will appear
5. Save your entries