Hi,
Kindly go through the below mentioned links, you will get more clarity on this.
Generating Correction W-2 Forms - Payroll United States (PY-US) - SAP Library
Generating for W-2c Forms - Payroll United States (PY-US) - SAP Library
Correction W-2 Forms - Payroll United States (PY-US) - SAP Library
Regards,
Venkat Polisetty