Where a candidate is required to be enrolled on a professional or trade register in its Member State of origin or establishment in order to pursue its professional activity, it may be requested to prove its enrolment on such a register or to provide a declaration on oath or a certificate as described in Part A of Annex VII for works contracts, Part B of Annex VII for supply contracts and Part C of Annex VII for service contracts. The lists set out in Annex VII are indicative. Member States shall notify the Commission and the other Member States of any changes to their registers and of the means of evidence referred to in these lists.

In procedures for the award of service contracts, insofar as candidates have to possess a particular authorisation or be a member of a particular organisation in order to be able to perform the service concerned in their country of origin, the contracting authority/entity may require them to prove that they hold such authorisation or membership.

This Article shall be without prejudice to Community law on the freedom of establishment and the freedom to provide services.