Depending on how they register, the information they will need to provide varies, for security reasons. 

If they register via an invitation e-mail sent to professional e-mail addresses, they will need a personal code (registration number or agent code / identifier). 

If they register via generic URL or via the employee safe, they will need a second code, called a security code. 

This code can be configured. These codes must only be provided once for digital payslip registration.