As a result, the first Tokyo Round Code on Government Procurement was signed in 1979 and came into force in 1981. It was amended in 1987 and the amendment came into force in 1988. The parties to the agreement then negotiated the extension of the scope and scope of the agreement, in parallel with the Uruguay Round. Finally, on 15 April 1994, a new public procurement agreement (GPA 1994) was signed in Marrakech at the same time as the WTO agreement, which came into force on 1 January 1996. The GPA is a multi-lateral agreement within the WTO framework, which means that not all WTO members are parties to the agreement. Currently, the agreement consists of 20 parties, with 48 WTO members. Thirty-six WTO members/observers participate in the GPA committee as observers. Of these, 12 members are in the process of joining the agreement. The agreement was revised in March 2012 and contracting frameworks were expanded. It came into force on April 6, 2014, after reaching the two-thirds acceptance threshold of the parties on March 7, 2014.
There is no expiration date. The agreement came into force in 1979 as the Tokyo Round Code on Government Procurement, which came into force in 1981 under the General Agreement on Tariffs and Trade.  It was then renegotiated in parallel with the 1994 Uruguay Round and this version came into force on 1 January 1996. The agreement was then revised on March 30, 2012. The revised MPA came into effect on July 6, 2014.  The following WTO members are parties to the 1994 agreement: Achieving «value for money» is a priority objective of most purchasing regimes. But how? Open, transparent and non-discriminatory purchases are generally seen as the best way to achieve this goal, as they optimize competition between suppliers. At the same time, there are competing policy objectives: many governments also use public procurement to achieve other domestic policy objectives, such as promoting certain local industrial sectors or social groups.