Article 18 Documentation requirements
1. Institutions shall document appropriately the prudent valuation methodology. This documentation shall include internal policies providing guidance on all of the following points:
(a) the range of methodologies for quantifying AVAs for each valuation position;
(b) the hierarchy of methodologies for each asset class, product, or valuation position;
(c) the hierarchy of market data sources used in the AVA methodology;
(d) the required characteristics of market data to justify a zero AVA for each asset class, product, or valuation position;
(e) the methodology applied where an expert based approach is used to determine an AVA;
(f) the methodology for determining whether a valuation position requires a concentrated position AVA;
(g) the assumed exit horizon for the purpose of calculating AVAs for concentrated positions, where relevant;
(h) the fair-valued assets and liabilities for which a change in accounting valuation has a partial or zero impact on CET1 capital according to Article 4(2) and Article 8(1).