Kernrechtsfrage
Whether the appeal against X. SA was admissible despite lack of contractual relationship
Extrahierter Entscheid
The appeal was inadmissible as to X. SA because no relevant challenge to its lack of standing to be sued was raised; in any event, it was not a contractual party.
Extrahierte Begründung
The appellants did not address the standing issue with the required reasoning. X. SA was neither a party to the sales contracts nor in a contractual relationship with the appellants.