221In that regard, it has, admittedly been held that the administration is required, in the context of an administrative investigation carried out following a complaint, to balance two rights which may be inconsistent, namely the right of the person who is the subject of the complaint to exercise his rights of defence and the right of the complainant to have his complaint examined properly, this right of the complainant being reflected in a duty of confidentiality imposed on the administration, pursuant to which it is required to refrain from taking any step likely to jeopardise the results of the investigation (see, by analogy, judgment of 13 December 2012, Donati v ECB, F‑63/09, EU:F:2012:193, paragraph 171).