| Tag | Field Name | Req'd | Comments | |
|---|---|---|---|---|
| 453 | NoPartyIDs | N | Repeating group below should contain unique combinations of PartyID, PartyIDSource, and PartyRole | |
| 448 | PartyID | N | Used to identify source of PartyID. Required if PartyIDSource is specified. Required if NoPartyIDs > 0. |
| 447 | PartyIDSource | N | Used to identify class source of PartyID value (e.g. BIC). Required if PartyID is specified. Required if NoPartyIDs > 0. |
| 452 | PartyRole | N | Identifies the type of PartyID (e.g. Executing Broker). Required if NoPartyIDs > 0. |
| 523 | PartySubID | N | Sub-identifier (e.g. Clearing Acct for PartyID=Clearing Firm) if applicable |