This bulletin has been prepared by the Drug Enforcement Administration (DEA), Office of Diversion Control, ARCOS Unit, to assist participating ARCOS registrants with the preparation and submission of required DEA controlled substance transaction reports to ARCOS.

• Change in ARCOS Reporting Media Formats.

Effective January 1, 2009, the ARCOS Unit will no longer accept ARCOS reports submitted on 3.5" diskettes or compact disks (CD). Participants currently filing automated reports on CDs or diskettes must switch to the ARCOS Electronic Data Interchange (EDI) uploading procedure on the DEA Office of Diversion Control website.

Instructions regarding registration for the automated EDI reporting upload procedure may be found at the following Internet website: "http://www.deadiversion.usdoj.gov/arcos/index.html".

We anticipate no changes for participants reporting on the manual DEA Form-333, "ARCOS TRANSACTION REPORTING", at this time.

Please contact the ARCOS Unit on (202) 307-8600 if you have any questions regarding this change in ARCOS reporting procedures.

Effective Date: January 1, 2009

Applicability: This bulletin applies to all ARCOS participants.