Facts
On 14 April 2014, [A. AG] (the appellant) concluded a contract for work with [B. AG] (the respondent) for "floor coverings, tile work" within the framework of the [C.] project in [U.] . The parties agreed on unit prices in accordance with SIA Standard 118. On 2 April 2015, the appellant issued a final invoice to the respondent for a remaining amount of CHF 129,546.10. With a claim filed on 23 October 2015 with the Commercial Court of the Canton of Zurich, the appellant requested that the respondent be ordered to pay the amount of CHF 129,546.10 plus interest at 5% from 9 January 2015. The Commercial Court dismissed the claim, as the claim as a whole was not sufficiently substantiated. Only 23 individual items were sufficiently justified, the total amount of which, CHF 144,453.20, was covered by the respondent's advance payments of CHF 345,316.10.Considerations
The Federal Supreme Court confirms the decision of the Commercial Court. The appellant did not sufficiently substantiate its claim by merely referring generally to the final invoice and measurements, without adequately presenting the individual items and quantities. Although the respondent…