| Tag | Name | Data Type | Req’d | Description |
|---|---|---|---|---|
| 453 | NoPartyIDs | NumInGroup | Y | Number of parties in this repeating group. |
| 448 | PartyID | String | Y | Unique identifier for this party. |
| 452 | PartyRole | Int | Y | The role of this party. Supported values: 3 = Client ID |
| 447 | PartyIDSource | Char | Y | The source of this party. Supported values: C = Generally accepted market participant identifier |