With regard to the duties of the county as a regional authority, a distinction must be made between compulsory duties and voluntary duties. The state may reserve the right to issue instructions in respect to compulsory duties. Then the state regulates not only the "whether", but also the "how" of duty fulfillment. The imposition of compulsory duties can only be carried out by law. Provisions are made regarding cost recovery. As the lower state administrative authority, the County District Office performs state functions. The County District Office is bound by the instructions of the state in these tasks.