Article 383v 4.

When assigning a risk exposure to a sector, institutions shall rely on a classification that is commonly used in the market for grouping issuers by industry sector. Institutions shall assign each issuer to one of the sector buckets in paragraph 1, Table 1, and shall assign all issuers from the same industry to the same sector. Risk exposures from any issuer that an institution cannot assign to a sector in that manner shall be assigned to bucket 11. Multinational or multi-sector equity issuers shall be allocated to a particular bucket on the basis of the most material region and sector in which the equity issuer operates.