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AI Summary of Article 175 Documentation of rating systems
This document outlines the necessary compliance obligations for institutions regarding their rating systems. Institutions must comprehensively document the design and operational aspects of these systems, covering critical elements such as portfolio differentiation, rating criteria, and management oversight. It is essential to provide evidence of compliance with regulatory requirements, particularly in the context of internal controls and the rationale behind rating criteria.
Additionally, where statistical models are utilised, institutions are mandated to detail their methodologies, including validation processes, while also maintaining consistency with established definitions of default and loss. Importantly, institutions must ensure access to necessary information from third-party vendors, especially when proprietary claims hinder compliance.
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Article 175 Documentation of rating systems
1. The institutions shall document the design and operational details of its rating systems. The documentation shall provide evidence of compliance with the requirements in this Section, and address topics including portfolio differentiation, rating criteria, responsibilities of parties that rate obligors and exposures, frequency of assignment reviews, and management oversight of the rating process.
2. The institution shall document the rationale for and analysis supporting its choice of rating criteria. An institution shall document all major changes in the risk rating process, and such documentation shall support identification of changes made to the risk rating process subsequent to the last review by the competent authorities. The organisation of rating assignment including the rating assignment process and the internal control structure shall also be documented.
3. The institutions shall document the specific definitions of default and loss used internally and ensure consistency with the definitions set out in this Regulation.
4. Where the institution employs statistical models in the rating process, the institution shall document their methodologies. This material shall: