To specify the responsibilities and carrier preference
| Position | Element | Name | Type | Min/Max | Repeat | |
|---|---|---|---|---|---|---|
| 1 | 133 | Routing Sequence Code | Mandatory | ID | 1/2 | AtMax 1 |
| 2 | 1431 | Preference Code | Mandatory | ID | 1/1 | AtMax 1 |
| 3 | 91 | Transportation Method/Type Code | Opt | ID | 1/2 | AtMax 1 |
| 4 | 140 | Standard Carrier Alpha Code | Opt | ID | 2/4 | AtMax 1 |
| 5 | 309 | Location Qualifier | Opt | ID | 1/2 | AtMax 1 |
| 6 | 310 | Location Identifier | Rel | Alphanumeric | 1/30 | AtMax 1 |
| 7 | 56 | Type of Service Code | Opt | ID | 2/2 | AtMax 1 |
| 8 | 1 | Route Code | Opt | Alphanumeric | 1/13 | AtMax 1 |
| 9 | 742 | Route Description | Opt | Alphanumeric | 1/35 | AtMax 1 |
| 10 | 98 | Entity Identifier Code | Opt | ID | 2/3 | AtMax 1 |