The key sub modules in SAP HR include recruitment, administrative, organization management, business trip, personal development, training and event management, personal time management, compensation management, payroll, and ESS & MSS. SAP HR is based on three main structures: 1) enterprise structure which provides employee work location and company information, 2) organizational structure which defines employee departments and business units, and 3) personal structure which specifies employee job functions. Configuring SAP HR involves defining, assigning, defaulting through features, and grouping different elements such as personnel area, personnel group, and personnel sub group.
