Zero-Net Checks and Zero-Net Advice for Concurrent Employment 
Zero-Net Checks and Zero-Net Advice for Concurrent Employment
Use
If a salary payment is not created for an employee in a payroll period, you can print the remuneration statement for this employee on a cancelled check (zero-net check) or as a zero-net advice. This is made possible by function P9ZNC.
For more information about zero-net checks and zero-net advice, access SAP Library and choose Human Resources ® Payroll ® Payroll <United States or Canada> ® Final Payroll Processing ® Wage and Salary Payments ®
Wage and Salary Payments by Check with Integrated Remuneration Statement and Wage and Salary Payments by Bank Transfer with Payment Advice Printing.
With concurrent employment, this function writes an entry of zero in table BT_PERSON for wage type /559 (Bank Transfer) in case wage type /559 or /558 (Payment of the Balance) is not created in Payroll. It also stores the grouping reason XXNT (Net, Retroactive Accounting, Payment) and the grouping value of the personnel assignment there.