Kernrechtsfrage
Whether the appeal introduced an impermissible new prayer for relief
Extrahierter Entscheid
The prayer was admissible insofar as it merely supplemented the earlier request with the reason of acknowledgment; it was inadmissible only to the extent it broadened the request beyond the first-instance limitation.
Extrahierte Begründung
Adding the ground of acknowledgment did not expand the claim, but asking for a declaration of no debt at all exceeded the claim as limited before the cantonal court.