Differentiator that you use to determine different paydays for different employees for whom payroll is run with the same periodicity.

You determine the date modifiers in Customizing for Payroll under Environment ® Payroll Organization ® Define Date Modifiers.

You assign a date modifier to every payroll area in your system in Customizing for Payroll, under Environment ® Payroll Organization ® Check Payroll Area.

• If you use the same payday for all payroll areas, assign the SAP standard modifier to all payroll areas.
• If you use different paydays for different payroll areas, assign different date modifiers to these payroll areas that you have created for your enterprise.

In your system, you must generate the payroll periods separately using Report RPUCTP00 (Generation of Payroll Periods) for every combination of period parameters and date modifiers that you have assigned to a payroll area. You generate the payroll periods in Customizing for Payroll under Environment ® Payroll Organization ® Generate Payroll Periods.

When you start payroll, enter the payroll area for which you want to run payroll on the payroll driver selection screen. The system recognizes, by means of the date modifier that you assigned to this payroll area, whether different date specifications exist for this payroll area.

A date modifier always refers to a period parameter.