When GATS came into force in 1995, members were allowed a once-only opportunity to take an exemption from the MFN principle of non-discrimination between a member’s trading partners. The measure for which the exemption was taken is described in a member’s MFN exemption list, indicating to which member the more favourable treatment applies, and specifying its duration. In principle, these exemptions should not last for more than ten years. As mandated by GATS, all these exemptions are currently being reviewed to examine whether the conditions which created the need for these exemptions in the first place still exist. And in any case, they are part of the current services negotiations.