The PPP approval process can have an important impact on the quality of project preparation. It is generally accepted that to ensure that a PPP project is fiscally sustainable, the ministry of finance should have a defined role in the approval of PPPs, especially regarding affordability and public commitments.26 The survey did indeed find that many economies align with the recognized good practice of mandating a specific intervention by the ministry of finance or central budgetary authority for the approval of PPP projects prior to the launch of the procurement process. For example, in the Arab Republic of Egypt, the minister of finance is a member of the Supreme Committee for PPP Affairs that approves all PPPs.27 However, 27 percent of the economies do not require such explicit intervention. Furthermore, in 44 percent of the economies, a second approval by the same authorities is also required after the procurement process is completed but before PPP contract is signed to ensure clearance of the process and its outcome.