In short, the CJEU has confirmed that the exclusion of a tenderer that omitted a declaration is acceptable under EU law, even if the declaration was not necessary or, in any case, the facts concerned by the declaration would not trigger exclusion. In an extreme reading, the case confirms the legality under EU procurement law of an absolute obligation to reject submissions that are 'merely' affected by strictly formal shortcomings [for discussion, see A Sanchez Graells, 'Rejection of Abnormally Low and Non-Compliant Tenders in EU Public Procurement: A Comparative View on Selected Jurisdictions', in M Comba & S Treumer (eds), Award of Contracts in EU Procurement, vol. 5 European Procurement Law Series (Copenhagen, DJØF, 2013) 289]. As mentioned, this is an area of very significant practical relevance and there is a need to properly understand the conditions under which such a stringent case law is being developed.
In that regard, it is important to highlight that, as the CJEU emphasises, the grounds for exclusion of tenderers expressly disclosed by the contracting authority in the tender documentation included situations where
one of the documents and/or one of the sworn statements the purpose of which is to demonstrate that both the general and special requirements have been complied with is incomplete or irregular, except where any irregularity is of a purely formal nature and may be remedied but is not decisive for the assessment of the tender (C-42/13, para 10).
After juggling with the other (rather complicated) circumstances of the case, the CJEU clarifies the relevant legal dispute as a question of the
compatibility with European Union law of the fact that it is impossible for ... a tenderer, after submitting his bid, to remedy the fact that he failed to annex ... a statement to his bid [confirming that its technical director was not affected by mandatory exclusion grounds related to criinal records], whether by submitting such a statement to the contracting authority directly or by showing that the person concerned was identified as the technical director in error (C-42/13, para 40).
It is also important to stress that the CJEU clearly indicates that "in so far as the contracting authority takes the view that that omission is not a purely formal irregularity, it cannot allow the tenderer subsequently to remedy the omission in any way after the expiry of the deadline for submitting bids" (para 45), which seems to create significant space for the flexibilisation of ommissions that can be remedied, particularly before the expiry of the deadline for submission of tenderers--but equally of omissions that can be reduced to purely formal irregularities.
More generally, in my view, the Manova - Cartiera dell'Adda line of case law offers some interesting opportunities for Member States and contracting authorities to avoid such impractical situations, provided they restrict themselves to the general rules under the new art 56(3) of Directive 2014/24. This provision indeed stresses that
Where information or documentation to be submitted by economic operators is or appears to be incomplete or erroneous or where specific documents are missing, contracting authorities may, unless otherwise provided by the national law implementing this Directive [or excluded by themselves in the specific tender documents, as per Manova and Cartiera dell'Adda], request the economic operators concerned to submit, supplement, clarify or complete the relevant information or documentation within an appropriate time limit, provided that such requests are made in full compliance with the principles of equal treatment and transparency.