Title: 12-15 File Link /csl/12-15/download CSL Letter Types No-Action CSL Divisions DSIO CSL Regulation Parts 4d 4e 4m 4s(b)(6) 8a(2) 8a(3) CSL Tags CPO CTA FCM IB Interstate MSP Registration SD Unregistered CSL Issuance Date Thu, 10/11/2012 - 12:00 Description Registration Relief for Certain Persons.