Questão jurídica principal
Whether the Confederation was liable in damages for an excessive VAT assessment and related alleged procedural faults.
Decisão extraída
The excessive assessment did not amount to a legally relevant breach of official duty; there was no actionable unlawfulness and thus no state liability.
Fundamentação extraída
Although the assessment was too high, the taxpayer's bookkeeping was deficient and justified an assessment by estimation. A mere erroneous estimate, later corrected, is not enough; a qualifying, serious official-duty breach or a grossly arbitrary estimate would be required, and that was absent.