To do this, you must prove your special expertise, personal suitability and necessary independence in the fields of business or agriculture. You will then be publicly appointed and sworn in upon application. This means that you are also subject to a list of duties under public law and are supervised with regard to compliance.

The purpose of public appointment is to provide courts, authorities and the public with competent and personally suitable experts, as their statements are particularly credible. Public appointment is a qualification under public law in the field of expert activities. Administrations and courts should give preference to these experts. However, they are also available to business and private clients in the same way.

In addition to all chambers of industry and commerce, in some federal states other professional chambers such as chambers of engineers, architects or agriculture as well as other state bodies are also authorized to make public appointments.

The publicly appointed and sworn experts are published in a standardized national directory. The designation "publicly appointed and sworn" is protected under criminal law.