1644 Service Request Code
Code indicating the type of logistics service requested
- Type
 - Identifier (ID)
 - Length
 - Min 2 / Max 2
 - Codes
 | Code | Description | 
|---|
|  CO | Consolidation | 
|  CS | Carrier Selection | 
|  CT | Contracted Services | 
|  FA | Freight Allocation | 
|  FP | Freight Payment | 
|  RE | Rate Estimate | 
|  ST | Secure Transport |