| Tag | Name | Type | Required | Description |
|---|---|---|---|---|
| 1120 | NumInGroup | Number of RootPartySubID (1121) and RootPartySubIDType (1122) entries | ||
| 1121 | String | Sub-identifier (e.g. Clearing Acct for PartyID=Clearing Firm) if applicable. Required if | ||
| 1122 | Int Enum | Type of Sub-identifier. Required if NoRootPartySubIDs > 0 |