1. The debtor may agree with the assignor in a writing signed by the debtor not to raise against the assignee the defences and rights of set-off that it could raise pursuant to article 18. Such an agreement precludes the debtor from raising against the assignee those defences and rights of set-off.
1. 债务人可与转让人以债务人签署的书面文件议定，不向受让人提出依照第18条规定可提出的抗辩和抵消权。此种协议限制债务人不得向受让人提出这些抗辩和抵消权。