Article 423. Application of substantive and procedural law

Applications for registration, provisional registration, notation or deletion, regardless when they have been lodged, are to be resolved under the substantive law in force on the date when the act was concluded or, as the case may be, on the date of the making or occurrence of the juridical fact which creates, modifies or extinguishes of the right subject to registration, provisional registration, notation or deletion, provided that the procedural law in force on the date the application was legally lodged is complied with.