104Thus, the second paragraph of Article 264 TFEU has been interpreted, inter alia, as allowing, on grounds of legal certainty, but also on grounds seeking to prevent a lack of continuity or a decline in the implementation of policies conducted or supported by the European Union, the effects of an act declared void to be maintained for a reasonable period (see judgment of 27 January 2021, Poland v Commission, T‑699/17, EU:T:2021:44, paragraph 61 and the case-law cited).