53Although, as has been noted in paragraphs 42 and 43 above, neither the GDPR nor any other instrument of EU law provides for specific rules in that regard, the fact remains that, as the Advocate General observed, in essence, in point 28 of his Opinion, when they apply the GDPR, the various national authorities involved are all bound by the duty of sincere cooperation enshrined in Article 4(3) TEU. Under that principle, in accordance with settled case-law, in areas covered by EU law, Member States, including their administrative authorities, must assist each other, in full mutual respect, in carrying out tasks which flow from the Treaties, take any appropriate measure to ensure fulfilment of the obligations arising from, inter alia, the acts of the institutions of the European Union and refrain from any measure which could jeopardise the attainment of the European Union’s objectives (see, to that effect, judgments of 7 November 2013, UPC Nederland, C‑518/11, EU:C:2013:709, paragraph 59, and of 1 August 2022, Sea Watch, C‑14/21 and C‑15/21, EU:C:2022:604, paragraph 156).
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