(4)To ensure effective risk mitigation, it is important to maintain a clear separation between operational, risk management and internal audit functions, including through mandating the carrying out of these functions by different persons. Furthermore, for non-Eurosystem SIPS operators, it should be ensured, subject to national law, that there is an independent member on their Board to enhance its effectiveness. As the Eurosystem has public policy objectives and responsibilities and an institutional set-up defined in the Treaty and the Statute of the European System of Central Banks and of the European Central Bank, Eurosystem SIPS operators should be granted an exemption from this requirement.