Question juridique clé
Whether § 155 ZPO governs document production by administrative authorities that are not parties to the civil case.
Solution extraite
§ 155 ZPO applies only when the administrative authority is not itself a party to the civil proceedings.
Motifs extraits
The revised ZPO newly regulated cooperation between civil justice and administration. Respecting separation of powers, the authority decides on disclosure requests, taking account of official secrecy rules.