Case C-696/21 P: Judgment of the Court (Seventh Chamber) of 16 March 2023 — GABO:mi Gesellschaft für Ablauforganisation:milliarium mbH & Co. KG v European Commission (Appeal — Arbitration clause — Sixth and seventh framework programmes for research, technological development and demonstration activities (2002-2006 and 2007-2013) — ‘Horizon 2020’ Framework Programme for Research and Innovation (2014-2020) — Eligible costs — Set-off of claims — Claim for reimbursement — Admissibility of the application — Article 76(d) of the Rules of Procedure of the General Court of the European Union — Requirement of clarity and precision)