1. The alternative standardised approach as set out in this Chapter shall be used only for the purposes of the reporting requirement laid down in Article 430b(1).
2. Institutions shall calculate the own funds requirements for market risk in accordance with the alternative standardised approach for a portfolio of trading book positions or non-trading book positions that are subject to foreign exchange or commodity risk as the sum of the following three components:
(a) the own funds requirement under the sensitivities-based method set out in Section 2;
(b) the own funds requirement for the default risk set out in Section 5 which is only applicable to the trading book positions referred to in that Section;
(c) the own funds requirement for residual risks set out in Section 4 which is only applicable to the trading book positions referred to in that Section.