Governments often have to acquire goods and services with public funds and for public purposes to carry out their missions. These purchases are generally referred to as public/public procurement. On March 30, 2012, the parties to the GPA adopted a review of the GPA. The revised agreement expands the markets covered by the GPA to provide U.S. products, services and suppliers with new opportunities to participate in centralized and sub-centralized procurement in other GPA parties. The revised agreement also provides for a substantial improvement in the text of the treaty by modernising the text to take into account current procurement practices and to clarify its commitments. The revised agreement came into force on 6 April 2014 following the tabling of the acceptance instrument by ten parties, two thirds of the parties to the agreement on that date. Since March 2019, Switzerland is the only member country of the GPA to have yet to table its instruments of acceptance and, as such, US commitments to Switzerland are defined in the 1994 GPA. 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 WTO secretariat provides technical assistance to help WTO members from developing countries who wish to learn more about the GPA and/or GPA.
If so, and desired by the candidate countries, other intergovernmental organizations (for example. B regional development banks) or governance institutions may also provide technical assistance for GPA membership. The revised GPA expands market access opportunities under the agreement, bringing many governments (departments and agencies) into the scope of the GPA and incorporating new services and other public procurement areas into its expanded coverage. Parties to the revised agreement will have market access estimated at between $80 billion and $100 billion per year, bringing the total coverage of the agreement to $1.7 trillion per year. 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. In addition, the WTO secretariat has implemented technical cooperation measures to help developing and least developed countries participate effectively in the WTO`s procurement work. International intergovernmental organizations granted observer status to the AMP committee The agreement was originally introduced 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 World Trade Organization (WTO) Public Procurement Agreement, commonly known as the GPA, establishes a framework for public procurement rights and obligations among WTO members who have signed it. The signatories agreed that suppliers of goods and services in other signatory countries would not be treated less favourably than domestic suppliers when covered by the agreement and that their public procurement laws, rules and procedures would be transparent and fair.