How can I enter a custom Person Number?
If you need a custom Person Number, then you can set the HCM Enterprise setting called Person Number Generation Method to Manual.
When you use the Manual Person Number Generation Method, the user must enter the unique Person Number while adding the person to the application.
When a family or emergency contact is added, the Automatic Person Number Generation Method will always be used. That’s because employees can enter family and emergency contacts, and they wouldn’t know a unique Person Number value when creating the contact. When you use the Automatic Person Number Generation Method, a unique numeric Person Number will be assigned to all people.