(20)In implementing the Community's development policy, more effective aid, greater complementarity and better harmonisation, alignment and coordination of procedures, both between the Community and its Member States and in relations with other donors and development actors, are essential to ensuring the consistency and relevance of aid whilst at the same time reducing the costs borne by partner countries as approved in the Declaration on Aid Effectiveness adopted by the High Level Forum on Aid Effectiveness, held in Paris, on 2 March 2005.