Diagnosis
You have specified a payroll period in which both fields from regularpayroll (payroll period and year) and fields from special payroll(payroll type, payroll identifier and payroll date) were filled.
This does not make sense as you must either specify a regular payrollperiod or a special payroll period.

System Response
Processing is interrupted until you correct the error.

Procedure
Only fill out the fields for regular payroll or the fields for specialpayroll.