(17)Regulation (EU) No 462/2013 strengthens the requirements regarding the presentation and disclosure of credit ratings. Pursuant to Article 8(2) and Annex I, Section D, Subsection I paragraph 2a of Regulation (EC) No 1060/2009 a CRA shall accompany the disclosure of rating methodologies, models and key rating assumptions with clear and easily comprehensible guidance, which explains any assumptions, the parameters, limits and any uncertainties surrounding the models and rating methodologies used in credit rating process. The Mexican legal and supervisory framework requires a CRA to highlight in a credit rating that it is the agency's opinion and contains safeguards to ensure that only information relevant to the credit rating are presented in the credit ratings. There are also requirements to ensure that CRAs provide sufficient guidance to enable users of credit ratings to understand them.