If you run a slaughterhouse that is subject to reporting requirements, you must report your prices for slaughter quantities in the relevant categories and trade classes to the responsible authority.
If you want to slaughter certain animals at home for your own consumption, you must have the meat of these animals officially tested for trichinae before processing.
There are around 200 different trades in Germany. For many trades you need a certain professional qualification if you want to become self-employed. No specific professional qualification is required for all other trades in the skilled trades. But ...
If you are entered in the register of owners of a business in a trade that does not require a license or a trade similar to a trade and you give up the business, you must have your entry deleted by the responsible Chamber of Crafts.
You might wish to start the independent operation of a trade or trade that does not require a license as a permanent trade. In this case, you must report this immediately to the Chamber of Crafts responsible for the place of business.
You may have a legitimate interest in information from the register of owners of a license-free trade or a trade similar to a trade. You can obtain this information from the responsible chamber of crafts.