(13)Regulation (EU) No 462/2013 introduces safeguards in Article 8(5a), (6) aa and ab and (7) of Regulation (EC) No 1060/2009 to ensure that any modification to rating methodologies does not result in less rigorous methodologies. Although the Canadian legal and supervisory framework requires that credit ratings are issued in accordance with methodologies that are rigorous, systematic, continuous and subject to validation, there is no explicit requirement that credit rating changes are issued in accordance with published methodologies. There is no obligation for CRAs to consult market participants on changes to or to correct errors in their methodologies. There is also no explicit requirement to notify the supervisor, other authorities or affected entities of any error to a methodology that could have an impact on its ratings.