Artículo B7.2.3. IFRS 9 Paragraph B7.2.3

In order to determine the loss allowance on financial instruments initially recognised (or loan commitments or financial guarantee contracts to which the entity became a party to the contract) prior to the date of initial application, both on transition and until the derecognition of those items an entity shall consider information that is relevant in determining or approximating the credit risk at initial recognition. In order to determine or approximate the initial credit risk, an entity may consider internal and external information, including portfolio information, in accordance with paragraphs B5.5.1⁠–⁠B5.5.6 .