As described in the Customer and Account Technical Specifications for Industry Members (LTID and Full CAIS), in the scenario a CAT Reporter that is a clearing firm or self-clearing firm determines a person (which includes both natural persons and legal entities under Section 13(h)(8)(E) of the Exchange Act) would qualify as a large trader, but the firm has not yet been provided with an LTID by the person, the clearing firm or self-clearing firm is required to assign an ULTID to the person until such time as the person provides their LTID. Any CAT Reporter that is a clearing firm or self-clearing firm with an obligation to assign an ULTID under the large trader rule is required to report any assigned ULTIDs associated to their FDIDs as part of their customer and account reporting. CAT Reporters that are not clearing firms or self-clearing firms and do not have an obligation to assign ULTIDs are not required to report ULTIDs to CAT as they will have no such number to report.