Article 143 Description Permission to use the IRB Approach Links Guidelines Question & Answers Draft Regulatory Technical Standards Source EUR-Lex Guidelines Paragraph All Links Guidelines on the application of the definition of default Question & Answers Paragraph All Links 2015_1859 When should an external rating be considered as a primary factor determining an internal rating assignment 2019_4745 Criteria for rating transfer 4 2015_1792 Recognition of additional credit protection in the regulatory LGD 2015_2468 Notification of model changes Draft Regulatory Technical Standards Paragraph 5 Links Regulatory Technical Standards on the conditions for assessing the materiality of extensions and changes of internal approaches for credit, market and operational risk