Question juridique clé
Whether the Swiss Federal Supreme Court could review the Liechtenstein VAT appeal only as a question of law.
Solution extraite
The Court held that it had jurisdiction only to review legal questions under the Liechtenstein-Swiss VAT agreement and could not reassess facts.
Motifs extraits
The bilateral agreement and Liechtenstein VAT statute limit review to legal errors; the Court therefore applied Swiss procedure but no factual review.