Chapter 9: Review of estimates

This chapter provides additional guidance for institutions with regard to their policies on the maintenance of the models, including regular review of estimates. To ensure that the deterioration of the model performance is detected and addressed in a timely manner, the GL clarify what institutions should consider in their internal frameworks for annual reviews, as required by Article 179(1)(c) of the CRR, and what should be the minimum scope of analysis that institutions conduct during this annual review. The review of estimates is required when new information comes to light, and at least on an annual basis. Moreover, institutions are asked to define a cycle for a fundamental review of models depending on the materiality of the models considered. In accordance with the GL, the scope of annual review includes the analysis of representativeness, the performance of the model, its stability over time and its predictive power. Full reviews including model design may be performed on a less frequent basis.

While the annual reviews referred to in Article 179(1)(c) of the CRR may be performed either by the model development function, which is part of the credit risk control unit or units (CRCU) or by the validation function, the required scope and frequency of validation is not within the scope of these GL. The role of independent validation has been further clarified in the RTS on IRB assessment methodology, in particular in Article 10 of these RTS, which specifies criteria for the independence of the validation function from model development, and in Article 11, which clarifies the minimum frequency and scope of validation. Therefore the requirements included in the GL are focused on the reviews of estimates in accordance with Article 179(1)(c) of the CRR.

The more fundamental reviews of models which in accordance with the GL should be performed on a regular basis may also be carried out as part of the validation function, or by the CRCU, which retains overall responsibility for the oversight and performance of the rating systems, in accordance with Article 190 of the CRR. In this sense, both the annual reviews and full reviews of estimates can be seen as part of the ongoing reviews by the CRCU as specified in Article 190(2)(h) of the CRR, even if partly or fully performed by the validation function, as long as the CRCU is provided with the results of validation. The appropriate remediation of any of the identified weaknesses may lead to changes in the models. These changes should be appropriately classified and approved in accordance with Commission Delegated Regulation (EU) No 529/2014.

1. Ülevaade

1.1 Viited

1.2 Tuvastatud nõuded

1.3 Seotud standardid

2. Tuvastatud nõuded

3. Seotud standardid

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