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Council Directive 90/531/EEC of 17 September 1990 on the procurement procedures of entities operating in the water, energy, transport and telecommunications sectors · European Union

Contracting entities shall define such further requirements as are necessary to complement European specifications or other standards. In doing so, they shall prefer specifications that indicate performance requirements rather than design or description characteristics unless the contracting entity has objective reasons for considering that such specifications are inadequate for the purposes of the contract.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-31 · Text as adopted (Official Journal); later amendments are not incorporated in this text.