For any Payroll related query, it would help if you would mention the Country.
In the employee's IT0014, what are the values maintained and what is the Payment Model selected?
If you were to do a Payroll Simulation for one employee, with the "Display log" box checked, and drilled down into that log to Function P0014, what would be the Amount generated for that Custom WT?
What Function calls PCR SAV1 ?