rec_34

(34) Credit rating agencies should ensure that methodologies, models and key rating assumptions such as mathematical or correlation assumptions used for determining credit ratings are properly maintained, up-to-date and subject to a comprehensive review on a periodic basis and that their descriptions are published in a manner permitting comprehensive review. In cases where the lack of reliable data or the complexity of the structure of a new type of financial instrument, in particular structured finance instruments, raises serious questions as to whether the credit rating agency can produce a credible credit rating, the credit rating agency should not issue a credit rating or should withdraw an existing credit rating. Changes in the quality of information available for monitoring an existing credit rating should be disclosed with that review and, if appropriate, a revision of the credit rating should be made.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-27 · Text as adopted (Official Journal); later amendments are not incorporated in this text.