Articles From "face off" to an "interface" The need to create an interface between the organizational HR system and the payroll system is one of the hottest topics in HR today, given the burgeoning transition of global organizations to a global payroll management configuration. What is an interface and why is it needed? Which data need to be transferred from an HR system to a payroll system? What is the "interface file format"? What frequency should the interface file be transferred? Which parties are responsible for it? How is data integrity maintained between the systems, etc.?