Judgment of the Court (Fourth Chamber) of 25 March 2021.#BT v Balgarska Narodna Banka.#Request for a preliminary ruling from the Administrativen sad Sofia-grad.#Reference for a preliminary ruling – Deposit-guarantee schemes – Directive 94/19/EC – Article 1(3)(i) – Article 7(6) – Article 10(1) – Concept of ‘unavailable deposit’ – Determination of unavailability of deposits – Competent authority – Depositor’s rights to compensation – Contractual clause contrary to Directive 94/19 – Principle of primacy of Union law – European System of Financial Supervision – European Banking Authority (EBA) – Regulation (EU) No 1093/2010 – Article 1(2) – Article 4(2)(iii) – Article 17(3) – EBA recommendation to a national banking authority on measures to comply with Directive 94/19 – Legal effects – Validity – Reorganisation and winding up of credit institutions – Directive 2001/24/EC – Article 2, seventh indent – Concept of ‘reorganisation measures’ – Compatibility with Article 17(1) and Article 52(1) of the Charter of Fundamental Rights of the European Union – Liability of Member States for breach of Union law – Conditions – Sufficiently serious breach of EU law – Procedural autonomy of Member States – Principle of sincere cooperation – Article 4(3) TEU – Principles of equivalence and effectiveness.#Case C-501/18.