Restrictions associated with an order. If more than one restriction is applicable to an order, this field can contain multiple instructions separated by space.
| Code | Meaning |
|---|---|
| 1 | Program Trade |
| 2 | Index Arbitrage |
| 3 | Non-Index Arbitrage |
| 4 | Competing Market Maker |
| 5 | Acting as Market Maker or Specialist in the security |
| 6 | Acting as Market Maker or Specialist in the underlying security of a derivative security |
| 7 | Foreign Entity (of foreign government or regulatory jurisdiction) |
| 8 | External Market Participant |
| 9 | External Inter-connected Market Linkage |
| A | Riskless Arbitrage |