1. Institutions shall develop and document specific policies and criteria for mapping the relevant indicator for current business lines and activities into the standardised framework set out in Article 317. They shall review and adjust those policies and criteria as appropriate for new or changing business activities and risks.
2. Institutions shall apply the following principles for business line mapping:
(a) institutions shall map all activities into the business lines in a mutually exclusive and jointly exhaustive manner;
(b) institutions shall allocate any activity which cannot be readily mapped into the business line framework, but which represents an ancillary activity to an activity included in the framework, to the business line it supports. Where more than one business line is supported through the ancillary activity, institutions shall use an objective-mapping criterion;
(c) where an activity cannot be mapped into a particular business line then institutions shall use the bus
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