50Nevertheless, it should be recalled that, first, Article 266 TFEU requires the institutions which adopted the act annulled to take the necessary measures to comply with the judgment annulling or declaring invalid its measure (judgment in Commission v AssiDomän Kraft Products and Others, C‑310/97 P, EU:C:1999:407, paragraph 50) and, second, that the annulment of a Union act does not necessarily affect the preparatory acts thereof (judgment in Limburgse Vinyl Maatschappij v Commission, C‑238/99 P, C‑244/99 P, C‑245/99 P, C‑247/99 P, C‑250/99 P to C‑252/99 P and C‑254/99 P, EU:C:2002:582, paragraph 73).
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