Social insurance court dismisses invalidity claim as only appeal procedure exists for rent authority decisions.

The Supreme Court dismissed the cassation appeal against a lower court's rejection of a claim to declare a social insurance decision void. The applicant argued the decision was invalid due to lack of service, but the lower courts treated it as a late appeal under specific social insurance statutes. The Supreme Court ruled that social insurance laws exclusively govern the appeal process, excluding the general administrative law provision for declaring decisions void.