9. The contracts referred to in this Article shall in particular ensure that the provision of services based on commercial infrastructure preserves the Union’s essential interests and the Programme’s general and specific objectives referred to in Article 3. Those contracts shall also include adequate safeguards to avoid any overcompensation of the contractors referred to in this Article, distortions of competition, conflicts of interest, undue discrimination or any other hidden indirect advantages. Such safeguards may include the obligation of accounting separation between the provision of governmental services and the provision of commercial services, including the setting up of a structurally and legally separate entity from the vertically integrated operator for the provision of governmental services, and the provision of open, fair, reasonable and non-discriminatory access to the infrastructure necessary for the provision of commercial services. The contracts shall also ensure that the conditions of Article 22 are met throughout their duration.