You use the Implement Registered Absence batch job to implement the absence entries made in the windows Reg. Abs. (from Machine Ctr.), Reg. Abs. (from Work Center) and the table Registered Absence.
The batch job implements the entries in the Calendar Absence Entry table.
On the work center or machine center card, you see the entries under Planning, Absence. Here, you have to update the separate entries under Absence, Update, in order to be able to see them in the actual Machine Center or Work Center Calendar.
Overwrite: If this field is checked, the program will overwrite any existing entries on this particular date and time for this machine center or work center.