Key legal question
Whether refusing to hear witness K.________ because the request was late was arbitrary or violated due process
Extracted holding
The refusal was not arbitrary; under § 81 ZPO/BS the party already had reason to request the evidence earlier.
Extracted reasoning
The court accepted that the witness could be assumed to know the business arrangements, so the party had reason to make the request already with the statement of defense. A late request is excluded not only when actual knowledge exists, but also when there was reason to act earlier.