One of the employee is underpaid in current month when there was a retro. I debugged payroll log and found the issue with partial period factoring.
The actual issue is, systems generates different value for TADIVI for the split period.
here is the PSP snapshot
here is the total period parameter
Here is the "Partial period parameter for WPBP period 01"
Here is the "Partial period parameter for WPBP period 02"
This different TADIVI value makes employee under paid during the partial period factoring. Any help would really appreciated.