Two or more persons who may claim one and the same performance from the debtor are (a) joint, or (b) partial creditors.
(a) Joint creditors
(aa) A joint creditor may claim full performance from the debtor and the debtor may render full performance to any of those joint creditors.
(bb) If one joint creditor has received performance, in kind or by way of set-off, the liability of the debtor to the other joint creditors is discharged to the extent of such performance or set-off. The same applies if one joint creditor concludes a settlement with the debtor.
(cc) As between themselves, joint creditors are entitled to performance in equal shares. If a joint creditor has received more than that creditor's share, that creditor must transfer the excess to the other creditors to the extent of their respective shares.
(dd) A release granted to the debtor by one of the joint creditors has no effect on the other joint creditors.
(ee) A debtor may invoke against a joint creditor any defense which he can invoke against another joint creditor, other than a defense personal to that other creditor. Invoking the defense has no effect with regard to the other joint creditors.
(b) Partial creditors
(aa) A partial creditor may claim from the debtor only his share of the claim and the debtor owes to that partial creditor only that creditor's share of the claim.
(bb) Partial creditors are entitled to performance in equal shares unless the contract or the law provides otherwise.