Kernrechtsfrage
Whether the auction had to be annulled for lack of notice of the realization request.
Extrahierter Entscheid
No. The debtor had received the auction notice under Art. 139 SchKG, so any earlier defect in notice of the realization request could no longer invalidate the auction.
Extrahierte Begründung
The finding of receipt of the auction notice was binding. Since the debtor knew of the auction well in advance, there was no basis to challenge the sale on the ground of omitted realization-request notice.