Conditions for success in PPP projects are at least that key decisions need to be made at the beginning of a partnership and set out in a concrete plan. Lines of responsibility must be classified. Achievable goals should be identified and stated. Making clear agreements prevents interactions suddenly stagnating at a later stage. Partners need to get some incentives to pursue the goals. The whole operation requires systematic monitoring. (Pollitt 2003: 63; sitated Rosenau 2000: 232–233; Klijn & Teisman 2005: 102, 113–115.)