‘(e)
CRR3
irrespective of whether an institution is using external, internal or pooled data sources, or a combination of the three, for its PD estimation, the length of the underlying historical observation period used shall be at least five years for at least one source;’
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Source: EUR-Lex CELLAR · retrieved 2026-09-04 · Text as adopted (Official Journal); later amendments are not incorporated in this text.