Analisis kesesuaian beban kerja terhadap jumlah sdm sap operasional divisi information technology shared services : studi kasus PT XYZ = Workload analysis on the number of human resource of sap operationin information technology shared services division : case study PT XYZ - Yatna Supriyatna, author (Fakultas Ilmu Komputer Universitas Indonesia, 2013)