/companies/{id}

Create or update a company with the specified ID (company number). If the company with the given ID does not exist, a new company is created. If the company exist, the existing company is fully updated. Not filled fields in the request are treated thereby as empty data fields and lead to empty fields in an already existing company. It is therefore recommended to use the GET/companies to check whether a company with a specific ID exists or not BEFORE you use PUT/companies/{id}.