Section 109-46.202 - Restrictions and limitations(a)-(c)(10) The Office of Management and Program Secretarial Officer (PSO) for their respective organizations shall designate an official to make the certification that a continuing valid requirement exists for excess personal property acquired and placed in official use for less than one year but no longer required and is to be disposed of under the exchange/sale provisions.(12) Program Secretarial Officer (PSO) shall make the determination concerning demilitarization of combat material.