Kernrechtsfrage
Whether the federal complaint could challenge alleged arbitrary fact-finding without exhausting the cantonal nullity appeal
Extrahierter Entscheid
Those factual grievances were inadmissible because they could have been raised before the Zurich Cassation Court.
Extrahierte Begründung
A federal civil appeal requires exhaustion of cantonal remedies; claims of manifestly incorrect fact-finding belonged to the available cantonal nullity complaint.