Real Security Enforcement Validity Despite Omission of Third-Party Owner Service

In enforcement proceedings based on the realization of a real security right (grundpfandverwertung), the failure to serve the payment order to a third-party owner of the pledged property is not a ground for nullity of the enforcement action itself. The court reasoned that while a third-party owner, such as a co-owner, must be served the payment order to allow them to raise objections and halt the realization procedure until their rights are addressed, the lack of prior service only suspends the subsequent enforcement steps against the third party, leaving the proceedings validly initiated against the primary debtor.