Contracting authorities may require that economic operators provide a test report from a conformity assessment body or a certificate issued by such a body as means of proof of conformity with requirements or criteria set out in the technical specifications, the award criteria or the contract performance conditions.

Where contracting authorities require the submission of certificates drawn up by a specific conformity assessment body, certificates from equivalent other conformity assessment bodies shall also be accepted by the contracting authorities.

Contracting authorities shall accept other appropriate means of proof than those referred to in paragraph 1, such as a technical dossier of the manufacturer where the economic operator concerned had no access to the certificates or test reports referred to in paragraph 1, or no possibility of obtaining them within the relevant time limits, provided that the lack of access is not attributable to the economic operator concerned and provided that the economic operator concerned thereby proves that the works, supplies or services provided by it meet the requirements or criteria set out in the technical specifications, the award criteria or the contract performance conditions.

Member States shall make available to other Member States, upon request, any information related to the evidence and documents submitted in accordance with Article 42(6), Article 43 and paragraphs 1 and 2 of this Article. The competent authorities of the Member State of establishment of the economic operator shall provide this information in accordance with Article 86.