Case C-687/21, MediaMarktSaturn: Judgment of the Court (Third Chamber) of 25 January 2024 (request for a preliminary ruling from the Amtsgericht Hagen — Germany) — BL v MediaMarktSaturn Hagen-Iserlohn GmbH, formerly known as Saturn Electro-Handelsgesellschaft mbH Hagen (Reference for a preliminary ruling — Protection of natural persons with regard to the processing of personal data — Regulation (EU) 2016/679 — Interpretation of Articles 5, 24, 32 and 82 — Assessment of the validity of Article 82 — Inadmissibility of the request for an assessment of validity — Right to compensation for damage caused by data processing which infringes that regulation — Transmission of data to an unauthorised third party on account of an error made by the employees of the controller — Assessment of the appropriateness of the protective measures implemented by the controller — Compensatory function fulfilled by the right to compensation — Effect of the severity of the infringement — Whether necessary to establish the existence of damage caused by that infringement — Concept of ‘non-material damage’)