The concurrence of two (2) or more creditors, or of two (2) or more debtors in a single obligation, does not imply that each one of the former has a right to ask, nor that each one of the latter is bound to comply in full with the things which are the object of the same. This shall only take place when the obligation determines it expressly, being constituted as a joint obligation.\nHistory —Civil Code, 1930, § 1090.
Puerto Rico Legal Code