The Tribunal found that the hiring manager acted on the basis of a flawed understanding of the role of competency-based interviews under ST/AI/2010/3 when he fettered his discretion by declining to recommend the Applicant for promotion based only on the result of his competencybased interview. Further, the hiring manager ignored relevant material when he did not take into account the Applicant’s performance assessment reports, which indicated that he was “outstanding” at teamwork.