For contracts awarded by contracting authorities, candidates registered on an official list of approved operators of a Member State of the European Union or holding a certificate issued by a certification body complying with European certification standards may submit to the contracting authority a certificate of registration issued by the competent authority or the certificate issued by the competent certification body, provided that these operators are established in the Member State which drew up the official list. These certificates shall indicate the references which enabled them to be entered on the official list or to obtain certification, as well as the classification on that list.
Certified entry on official lists by the competent bodies or the certificate issued by the certification body shall constitute a presumption of suitability as regards the grounds for exclusion and the conditions of participation covered by the official list or the certificate. However, as regards verification that the candidate’s tax and social security situation is in order, an additional certificate may be required when the contract is awarded or, where the purchaser limits the number of candidates admitted to tender or to take part in the dialogue, when the candidates are selected.