| A | Released From Bad Order |
| B | Bad Order Setback |
| C | Car Not Weighed |
| D | Empty Received as a Load |
| DS | Destination Switch Move |
| E | Embargoed Shipment |
| G | Refused by Customer - Unneeded |
| HM | Haulage Movement Indicates a haulage movement or agreement |
| I | Interchanged in Error |
| L | Not in Compliance With Special Car Order 90 or Special Car Order 100 Empty |
| M | Empty - No handling required by Car Service Rules |
| N | No Record Rights |
| NC | No Clearance |
| NU | Not on Universal Machine Language Equipment Register |
| O | Overweight Shipment |
| OA | Old Age (Over-age) |
| OS | Origin Switch Move |
| P | Intermediate Switch Carrier Non Line-Haul Rail Carrier |
| R | Refused by Customer - Unfit |
| RB | RBOX or RGON Exception A boxcar or gondola car restriction |
| S | Car Applied to Shipper Car Order - Place for Loading |
| T | Transfer or Adjustment of Lading Car Service Rate 10, Sections 1 & 2 |
| W | No Waybill |
| X | Association of American Railroads Restriction |