Case C-69/17: Judgment of the Court (Seventh Chamber) of 12 September 2018 (request for a preliminary ruling from the Curtea de Apel Bucureşti — Romania) — Siemens Gamesa Renewable Energy România SRL, formerly Gamesa Wind România SRL v Agenţia Naţională de Administrare Fiscală — Direcţia Generală de Soluţionare a Contestaţiilor, Agenţia Naţională de Administrare Fiscală — Direcţia Generală de Administrare a Marilor Contribuabili (Reference for a preliminary ruling — Taxation — Value added tax (VAT) — Right of deduction — Acquisitions made by a taxpayer declared ‘inactive’ by the tax authorities — Refusal of the right of deduction — Principles of proportionality and neutrality of VAT)