When executive proceedings apply
Under Article 439 of the Code of Civil Procedure (CPC, Law No. 1337/1988), executive proceedings apply when a claim is made, on the basis of an enforceable instrument (título que traiga aparejada ejecución), for a due and payable obligation to pay a liquidated (fixed) sum of money. Article 448 of the same code lists the instruments that are enforceable.
Law No. 1337/1988, Code of Civil Procedure (BACN) (opens in a new tab)