This European Standard defines the requirements for: a) the Accreditation of Attestors and/or Attestation Bodies; b) the Attestation system; c) the assessment, with a view to obtaining a Certificate of Attestation of the contract award procedures and practices of those entities falling within the scope of national rules implementing Council Directive 93/38/EEC; respecting the requirements in Art. 3 - 7 of Council Directive 92/13/EEC.