| Code Value |
Definition |
| ANO | Anonymous Complaint |
| ATF | ATF Referral |
| BOP | BOP Referral (Bureau of Prisons) |
| CGR | Coast Guard Referral |
| CUS | Customs Referral |
| D91 | DOL(Department of Labor) Referral Using Form ESA-91 |
| DEA | DEA Referral (Drug Enforcement Agency) |
| DEP | Deportations Referral |
| DOI | DOI Referral (Department of the Interior) |
| DOL | DOL Referral (Department of Labor) |
| DOO | DOL(Department of Labor) Referral Using Form Other Than ESA-91 |
| DOS | Dept of State Referral |
| DOT | DOT Referral (Department of Transportation) |
| EVI | Evidence |
| EXM | Examinations Referral |
| FBI | FBI Referral (Federal Bureau of Investigation) |
| FGR | Foreign Government Referral |
| FLE | Foreign Local Enforcement Agency Referral |
| FLU | Follow-up Investigation |
| GAP | GAP Referral (General Administrative Plan) |
| GAS | GAP(General Administrative Plan) special |
| INF | Informant |
| IRS | IRS Referral |
| ISP | Inspections Referral |
| LA | Link Analysis |
| LEA | LEA Referral (Local Enforcement Agency) |
| NSR | National Security Referral |
| NTP | National Targeting Plan |
| NVS | Non-Visual Surveillance |
| OAR | Other Agency Referral |
| OTH | Other Lead |
| PC | Private Citizen |
| SAC | SAC Discretion 8 CFR 274a.9(b) |
| TRS | Treasury Referral |
| USM | USMS Referral (US Marshalls Service) |
| VS | Visual Surveillance |
| WSC | Written, Signed Complaint |