UNAT addressed the Secretary-General’s appeal. UNAT agreed with the Secretary-General that UNDT erred on a question of law in substituting its own decision for that of the Administration regarding how the selection process should have been conducted. UNAT held that UNDT had improperly relied on “logic” to insert a step into the assessment process that was not required under the staff selection system established under the Staff Regulations and Rules. UNAT held that UNDT had clearly erred on a matter of law and had exceeded its competence by deciding that the DSS/SSS management lacked...