Recital 37

(37)It is necessary for credit rating agencies to establish proper procedures for the regular review of methodologies, models and key rating assumptions used by the credit rating agency in order to be able to properly reflect the changing conditions in the underlying asset markets. With a view to ensuring transparency, disclosure of any material modification to the methodologies and practices, procedures and processes of credit rating agencies should be made prior to their coming into effect, unless extreme market conditions require an immediate change in the credit rating.