Enterprise Resource Planning (ERP) systems are modular software that enable the integration of business processes in an organization with a central database. Users can reach to real time, accurate, one-source, and on-line information. SAP is the pioneer ERP vendor in the world with annual revenue of € 23.46 billion in 2017. This paper presents the implementation of SAP system at a public institution in Turkey. Reasons behind ERP implementation, vendor selection process, consultant selection process, and transition process are explained, and the methods used are described. The adaption of the institution to ERP system is summarized.