This resource Highlights reference material for the common procurement certification scheme for the UN, description of the guiding principles which govern UN procurement activities, overview of the UN procurement cycle including certain transverse themes like risk management sustainable and e-procurement, logistics and ethics, basis for development of training materials, basis for further development of UN procurement reform and basis for further development of UN common guidelines to adopt good practices in procurement. It covers the following topics:-1. Procurement in the UN system of organization2. Organizational procurement strategy3. procurement process4. Transverse procurement themes5. References.