Time-Based Delimitation of a Wage Type 
Use
If you no longer need a customer-specific wage type, you can delimit this wage type (time-based) using the wage type copier. It is then no longer available in your system.

Never delimit SAP model wage types.
Never delimit customer-specific wage types in a live system; only ever do this in a test system.
We recommend that you do not delimit wage types with respect to time, as this can cause problems during the Payroll run. Instead, you should define in Customizing that the wage type should no longer be permitted for entry in any infotype. For example, you have the possibility of doing this for each infotype in Customizing for Personnel Administration in the section
Payroll Data
Prerequisites
You have copied SAP model wage types to the customer name range.
Procedure
The Delete Wage Types screen appears.

The delimitation date must be a payroll period after the date from which you no longer need the wage type. The system still needs the wage type for another payroll period, to be able to import the payroll result from the previous period.
A
Result
The system makes the following changes in the SAP System tables:
Example: Table T512W (Wage Type Evaluation)
Example: Table T555K (Transfer to Time Wage Types)