Harmony Gold Mining Company Limited (Harmony) is one of the world’s largest gold mining companies with its operations largely located on the Witwatersrand basin in South Africa, with an open cast operation and four exploration sites in Papua New Guinea (PNG). The company upgraded its legacy systems to the Oracle e-Business Suite ERP system but did not achieve the desired results. With essential functions such as material quantities and account valuations not reconciling, business users lost confidence in the new system.