The agreement was revised in March 2012 and also expanded the supply it covers. It entered into force on 6 April 2014 after reaching the threshold for adoption by two-thirds of the parties on 7 March 2014. It has no expiration date. To be covered by the GPA, public procurement must meet minimum value thresholds. These vary according to the type of contracting entity and the contract. The current thresholds can be found in the table of thresholds published by the WTO (off-site link). Surrogacy applies to procurement by all contractual means, including purchase, leasing or leasing with or without a purchase option. It applies to entities listed by each signatory country in Annex I (off-site link) to the agreement. Annex 1 to Appendix I lists the central government agencies covered, the sub-central government agencies in Annex 2 and the other entities in Annex 3. The following WTO Members are Parties to the 1994 Agreement > Agreement on Government Procurement > Technical Cooperation Activities > Publications > Government Procurement and the Doha > Government Procurement Development Agenda and the GATS > relevant instruments adopted by other organizations > Tenth Ministerial Conference: Briefing Notes Among these three areas the work of Gp A is the most active and has led to significant trade liberalization.
The revised GPA entered into force on 6 April 2014 and marks an important milestone for the WTO. The GPA is a plurilateral agreement within the WTO, which means that not all WTO members are parties to the agreement. Currently, the agreement has 20 parties and 48 WTO members. 36 WTO members/observers participate as observers in the GPA Committee. Of these, 12 members are contributing to the agreement. The GPA contains a number of provisions to ensure that tendering procedures for public procurement in signatory countries are transparent, efficient and fair. The signatories agreed that: Signatories to the GPA are required to publish summary notices on the procurement opportunities covered by the agreement. Each member has identified publications in which these opportunities are published. The publications are listed in Annex II (off-site link). The Tender Review Body is a body created by the parties to enable suppliers to challenge irregular government tenders.  These bodies are independent and strive to deal with each case promptly. The Review Panel also has the authority to recommend interim emergency measures, which may be recommended within available days if a Review Panel finds a prima facie case that an offer is being challenged.
 The liberalisation of public procurement is likely to bring benefits both in terms of the efficiency of public procurement and commercial interests. .