 Logically speaking, the court noted there, a non-existent right of action or a non-existent debt cannot be transferred as the subject-matter of a cession.The parties may agree in the obligationary agreement to cede to the cessionary a future or contingent right of action ("spes futurae actionis"), or a future or conditional debt ("debitum futurum" or "conditionale") as and when it comes into existence and accrues or becomes due and payable, whereupon it is transferred to the cessionary.If it never comes into existence it amounts to a non-existent right of action or a non-existent debt, which cannot qualify as the subject-matter of a cession.