Judgment of the General Court (Fourth Chamber) of 13 October 2021.#Delphine Aupicon and Others v European External Action Service.#Civil service – Officials – Members of the temporary staff – Members of the contract staff – Remuneration – EEAS staff posted to a third country – Article 10 of Annex X to the Staff Regulations – Annual assessment of the allowance for living conditions – ‘Guidelines establishing the methodology to fix the living conditions allowances’ – Decision fixing the rate of the allowance for living conditions paid to staff posted to Ghana at 20% – Failure to draw up the questionnaire required by the guidelines – Procedural irregularity – Manifest error of assessment.#Case T-655/18.