About Reversing Checks
If you print and approve a payroll check
When you post the reversal, Bank Services sends information about the reversed check to Payroll so that Payroll can reverse the check, delete the associated employment insurance history record, and adjust employee payroll totals (for Canada) or adjust employee payroll totals, and update the 941 tax liability for U.S..
The dates that are used as the pay period end date and transaction date for the reversed check depend on the selection for the Use Original Dates When Reversing Checks option on the Payroll Options window .
The system assigns CP-RC or UP-RC as the source code for reversed check transactions.