28In that regard, even assuming that the decision of 11 December 2017 is merely confirmatory of the decision of 30 June 2017, it must be recalled that, according to settled case-law, the applicant, having brought an action within the prescribed time limit, is entitled to challenge either the confirmed decision, or the confirmatory decision, or both (see, to that effect, judgment of 18 December 2007, Weißenfels v Parliament, C‑135/06 P, EU:C:2007:812, paragraph 54 and the case-law cited).