| 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. | 
                
                  | => | Component Block - <PtysSubGrp> | N | Repeating group of Party sub-identifiers. |