responsibilities of a central bank when applying the Core Principles

(A) The central bank should define clearly its payment system objectives and should disclose publicly its role and major policies with respect to systemically important payment systems. (B) The central bank should ensure that the systems it operates comply with the Core Principles. (C) The central bank should oversee compliance with the Core Principles by systems it does not operate and it should have the ability to carry out this oversight. (D) The central bank, in promoting payment system safety and efficiency through the Core Principles, should cooperate with other central banks and with any other relevant domestic or foreign authority.
See also:
 Core Principles for systemically important payment systems   retail bank interest rates See MFI interest rates