Article 277 3.

By way of derogation from paragraph 2, institutions shall map derivative transactions that have more than one material risk driver to more than one risk category. Where all the material risk drivers of one of those transactions belong to the same risk category, institutions shall only be required to map that transaction once to that risk category on the basis of the most material of those risk drivers. Where the material risk drivers of one of those transactions belong to different risk categories, institutions shall map that transaction once to each risk category for which the transaction has at least one material risk driver, on the basis of the most material of the risk drivers in that risk category.