(a)

that no external sources fulfilling the requirements set out in Article 2 or in Article 4, as applicable, are available for estimating default probabilities for those issuers and losses given default for those positions, respectively;

(b)

that the use of an internal methodology fulfilling the requirements set out in Article 1(1) for estimating default probabilities for those issuers, or in Article 3(1) for estimating losses given default for those positions, respectively, would not be feasible due to a lack of input data, or that it would be disproportionate in relation to the materiality or the holding period in line with the trading strategy adopted for those issuers or positions;

(c)

the values of ‘m’, calculated in accordance with the formulae laid down in Article 1(5) and Article 3(5).

(a)

a description of the methodologies used to obtain estimates of default probabilities from external sources in accordance with Article 2(1) and Article 2(2);

(b)

documentation and underlying rationale where an institution has identified different terms, information or assumptions in accounting for expected credit losses and the estimates of default probabilities from external sources for exposures under the internal default risk model for the purpose of ensuring sound credit risk management, as approved by senior management;

(c)

a description of the methodologies used to obtain estimates of losses given default from external sources in accordance with Article 4(1);

(d)

the results of the validation performed in accordance with Article 2(1) and Article 4(1);

(e)

the hierarchy of the external sources used, in accordance with Article 2(3) and Article 4(2).