Code of Civil Procedure Article 247

An action for a declaratory judgment confirming a legal relation may not be initiated unless the plaintiff has immediate legal interests in demanding such judgment. The same rule shall apply to an action for a declaratory judgment confirming the authenticity of a certificate or the existence or nonexistence of the facts from which a legal relation arises.A declaratory judgment action confirming the existence or nonexistence of facts from which a legal relation arises provided in the preceding paragraph may not be initiated unless no action of any other kind can satisfy the same purpose.In the case provided in the preceding paragraph, if another claim may be asserted within the same proceeding, the presiding judge shall elucidate on it; if the plaintiff amends the claim or raises additional claims as a result of such assertion, the restriction provided in the first sentence of the first paragraph of Article 255 will not apply.