Article 521. Penalty for failure to deliver or delay delivery of goods.
A penalty or a contract for the delivery of a penalty for failure to deliver or delay the delivery of goods shall be collected from the supplier until the actual performance of the obligation within the scope of his obligation to replenish the undelivered quantity of goods in subsequent delivery periods, unless a different procedure for payment of the penalty is established by law or contract.
References to other articles of chapter 30. Purchase and sale: