On orders, there is a SCAC (Standard Carrier Alpha Code) associated with the order. This is also true for shipments. Below are the possible codes on the purchase order (inbound) and codes that can be submitted on shipments (outbound).
*Freight is submitted on the 850 only, it isn't an acceptable code for the ASN/Shipment.
| STANDARD CODE | DESCRIPTION |
| ABFS | ABF Freight |
| AVRT | Averitt |
| DHLC | DHL |
| ECHS | ECHO Global Logistics |
| EXLA | Estes Express |
| FDE | FedEx (service level unspecified) |
| FDE-SE | FedEx 2Day |
| FDEG-CG | FedEx Ground |
| FDEG-HD | FedEx Home Delivery |
| FDEG-ND | FedEx Next Day (Standard) |
| FEXF | FedEx Freight |
| Freight | Unspecified (best available rate)* |
| HJNT | JB Hunt |
| RLCA | R&L Carriers |
| SEFL | Southeastern Freight |
| TTTR | Total Transportation |
| UNSP | Unspecified (best available rate) |
| UPGF | UPS Freight |
| UPSN-SC | UPS 2nd Day Air |
| UPSN-3D | UPS 3 Day Select |
| UPSN-CG | UPS Ground |
| UPSN-ND | UPS Next Day Air |
| USPS | USPS (service level unspecified) |
| USPS-FC | USPS First Class Mail |
| USPS-PB | USPS Priority Mail |