35Although it is for the national court to determine whether the taxable person supplies a single service in a particular case and to make all definitive findings of fact in that regard, the Court may, however, provide it with any guidance as to interpretation that will be helpful to it in disposing of the case (judgment of 27 June 2013, RR Donnelley Global Turnkey Solutions Poland, C‑155/12, EU:C:2013:434, paragraph 23).
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