Judgment of the General Court (Seventh Chamber, Extended Composition) of 3 March 2021.#João Miguel Barata v European Parliament.#Civil service – Officials – Promotion – Certification procedure – Exclusion of the applicant from the final list of officials entitled to take part in the training programme – Article 45a of the Staff Regulations – Action for annulment – Communication by registered letter – Article 26 of the Staff Regulations – Registered letter not collected by the person to whom it was addressed – Starting point of the period prescribed for instituting proceedings – Admissibility – Obligation to state reasons – Right to be heard – Principle of sound administration – Proportionality – Rules on the use of languages.#Case T-723/18.