94. For the purpose of determining PD estimates based on a mapping to an external rating scale as …

For the purpose of determining PD estimates based on a mapping to an external rating scale as referred to in paragraph 91(b)((i)), institutions should base the default rates observed for the external organisation’s grades on a time series representative of the likely range of variability of default rates for the grades and pools of the given portfolio.

1. Overview

1.1 References

1.2 Identified Requirements

1.3 Related Standards

2. Identified Requirements

3. Related Standards

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