The margin of safety is determined by the asset manager himself, depending on how much work he has to do with the case. The asset manager evaluates the work of the trustee annually together with his client. These evaluations are not published and are used internally for quality control of the cooperation partners.
The trustee has a contract with IGUV and is subject to professional secrecy. Except for the purpose of completing the tax return, the trustee may not contact the client or disclose client data to third parties.