1. Contracts shall be awarded on the basis of the criteria laid down in Articles 47 and 49, taking into account Article 19, after the suitability of the economic operators not excluded under Articles 39 or 40 has been checked by contracting authorities/entities in accordance with the criteria of economic and financial standing, of professional and technical knowledge or ability referred to in Articles 41 to 46 and, where appropriate, with the non-discriminatory rules and criteria referred to in paragraph 3.

2. Contracting authorities/entities may require candidates to meet minimum capacity levels in accordance with Articles 41 and 42.

The extent of the information referred to in Articles 41 and 42 and the minimum levels of ability required for a specific contract must be related and proportionate to the subject-matter of the contract.

These minimum levels shall be indicated in the contract notice.