Article 321. Fulfillment of an obligation in which several creditors or several debtors participate.
If several creditors or several debtors take part in the obligation, each of the creditors has the right to demand performance, and each of the debtors is obliged to fulfill the obligation in equal proportion with the others, since the law, other legal acts or conditions of the obligation do not follow otherwise.
References to other articles of chapter 22. Performance of obligations: