Exceptions are possible in the form of so-called exceptions within the meaning of Article II. Members were allowed to request such exemptions before the entry into force of the agreement. New waivers may be granted to new Members only at the time of accession or, in the case of existing Members, by way of a waiver under Article IX(3) of the WTO Agreement. All exceptions are subject to review; in principle, they should not last more than 10 years. In addition, the GATS allows groups of members to conclude economic integration agreements or mutually recognize regulatory standards, quotas, etc., if certain conditions are met. 3. (a) If no agreement has been reached between the changing Member and a Member concerned before the expiry of the time limit for negotiations, the Member concerned may suspend arbitration. Any member concerned who wishes to assert a right to compensation must participate in the arbitration. either on the date of entry into force of this Agreement or on the basis of a reasonable period of time, with the exception of measures permitted under Articles XI, XII, XIV and XIVbis. 3. Where a Member considers that a benefit that it could reasonably have expected from a specific obligation of another Member under Part III of this Agreement is nullified or affected by the application of a measure that is not contrary to the provisions of this Agreement, it may have recourse to the DSU. If the DSB determines that the measure has nullified or affected such a benefit, the Member concerned shall be entitled to a mutually satisfactory adjustment on the basis of Article XXI(2), which may include the modification or withdrawal of the measure.
If no agreement can be reached between the members concerned, Article 22 of the DSU shall apply. 2. (a) At the request of a Member whose benefits under this Agreement may be affected by a proposed modification or withdrawal notified in accordance with paragraph 1(b) (referred to in this Article as the Member concerned), the changing Member shall enter into negotiations with a view to reaching agreement on a necessary compensatory adjustment. In such negotiations and agreements, interested Members shall endeavour to maintain a general level of mutually beneficial commitments no less favourable to trade than provided for in the timetables of the specific commitments prior to these negotiations. (a) within 12 months of the entry into force of the WTO Agreement on the WTO Agreement, inform the Council for Trade in Services of its existing recognition measures and indicate whether those measures are based on agreements or arrangements of the type referred to in paragraph 1; 5. Where, at the time of the conclusion, extension or substantial modification of an agreement referred to in paragraph 1, a Member intends to withdraw or modify a specific obligation that does not meet the conditions set out in its Schedule, it shall give at least 90 days` notice of such modification or withdrawal and of the procedure provided for in paragraph 2; Articles XXI 3 and 4 shall apply. .