UNAT held that the lack of the nationality requirement on the Appellant’s part constituted a valid reason for not renewing his fixed-term appointment. Further, that the Administration previously granting the Appellant successive contract extensions did not give grounds for an expectancy of renewal unless the Administration had made him an express promise in writing, which it did not. Moreover, UNAT noted that an Administration has a duty to rectify its own errors and, when it commits an irregularity in the recruitment procedure, it is inclined to take appropriate measures to correct the...