services purchased by its entities. With a view to ensuring that such statistics are comparable, the Committee shall provide guidance on methods to be used. With a view to ensuring effective monitoring of procurement covered by this Agreement, the Committee may decide unanimously to modify the requirements of subparagraphs (a) through (d) as regards the nature and the extent of statistical information to be provided and the breakdowns and classifications to be used.Article XXChallenge ProceduresConsultations 1. In the event of a complaint by a supplier that there has been a breach of this Agreement in the context of a procurement, each Party shall encourage the supplier to seek resolution of its complaint in consultation with the procuring entity. In such instances the procuring entity shall accord impartial and timely consideration to any such complaint, in a manner that is not prejudicial to abtaining corrective measures under the challenge system.Challenge 2. Each Party shall provide non-discriminatory, timely, transparent and effective procedures enabling suppliers to challenge alleged breaches of the Agreement arising in the context of procurements in which they have, or have had, an interest.3. Each Party shall provide its challenge procedures in writing and make them generally available.4. Each Party shall ensure that documentation relating to all aspects of the process concerning procurements covered by this Agreement shall be retained for three years.5. The interested supplier may be required to initiate a challenge procedure and notify the procuring entity within specified time-limits from the time when the basis of the complaint is known or reasonably should have been known, but in no case within a period of less than 10 days.6. Challenges shall be heard by a court or by an impartial and independent review body with no interest in the outcome of the procurement and the members of which are secure from external influence during the term of appointment. A review body which is not a court shall either be subject to judicial review or shall have procedures which provide that:(a) participants can be heard before an opinion is given or a decision is reached;(b) participants can be represented and accompanied;(c) participants shall have access to all proceedings;(d) preceedings can take place in public;(e) opinions or decisions are given in writing with a statement describing the basis for the opinions or decisions;(f) witnesses can be presented;(g) documents are disclosed to the review body.7. Challenge procedures shall provide for:(a) rapid interim measures to correct breaches of the Agreement and to preserve commercial opportunities. Such action may result in suspension of the procurement process. However, procedures may provide that overriding adverse consequences for the interests concerned, including the public interest, may be taken into account in deciding whether such measures should be applied. In such circumstances, just cause for not acting shall be provided in writing;(b) an assessment and a possbility for a decision on the justification of the challenge;(c) correction of the breach of the Agreement or compensation for the loss or damages suffered, which may be limited to costs for tender preparation or protest.8. With a view to the preservation of the commercial and other interests involved, the challenge procedure shall normally be completed in a timely fashion.Article XXIInstitutions1. A Committee on Government Procurement composed of representatives from each of the Parties shall be established. This Committee shall elect its own Chairman and Vice-Chairman and shall meet as necessary but not less than once a year for the purpose of affording Parties the opportunity to consult on any matters relating to the operation of this Agreement or the furtherance of its objectives, and to carry out such other responsibilities as may be assigned to it by the Parties.2. The Committee may establish working parties or other subsidiary bodies which shall carry out such functions as may be given to them by the Committee.Article XXIIConsultations and Dispute Settlement1. The provisions of the Understanding on Rules and Procedures Governing the Settlement of Disputes under the WTO Agreement (hereinafter referred to as the 'Dispute Settlement Understanding') shall be applicable except as otherwise specifically provided below.2. If any Party considers that any benefit accruing to it, directly or indirectly, under this Agreement is being nullified or impaired, or that the attainment of any objective of this Agreement is being impeded as the result of the failure of another Party or Parties to carry out its obligations under this Agreement, or the application by another Party or Parties of any measure, whether or not it conflicts with the provisions of this Agreement, it may with a view to reaching a mutually satisfactory resolution of the matter, make written representations or proposals to the other Party or Parties which it considers to be concerned. Such action shall be promptly notified to the Dispute Settlement Body established under the Dispute Settlement Understanding (hereinafter referred to as 'DSB'), as specified below. Any Party thus approached shall give sympathetic consideration to the representations or proposals made to it.3. The DSB shall have the authority to establish panels, adopt panel and Appellate Body reports, make recommendations or give