Considering the circumstances, the most appropriate remedy would be to rescind the contested decision (in comparison, see the Appeals Tribunal in Lucchini 2021-UNAT-1121 and Rolli 2023-UNAT-1346).
It is standard practice and courtesy in the Organization that, albeit fixed-term appointments, per definition, do not carry any expectancy of renewal under staff rule 4.13(c), a staff member whose fixed-term appointment is not to be renewed is to receive a pre-notification concerning the non-extension, at least 30 days before its expiry. The Respondent has not argued or submitted any documentation...