# Third Party Support

When an OMS/OEMS account is set up to place orders on behalf of one or more other accounts, this account will receive trade capture reports for:

- all their own trades
- all the orders placed by the other accounts
  - orders placed by the OMS/OEMS on behalf of the other account
  - orders placed by the other account on Gemini outside the OMS/OEMS, using the UI or any other API

When an order is placed, the trade capture report will contain two party IDs with the following [PartyRole `<452>`](https://www.onixs.biz/fix-dictionary/4.4/tagNum_452.html) values:

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### Party Fields

| Field                                                                     | Tag | Value                                                                                                                                              |
| ------------------------------------------------------------------------- | --- | -------------------------------------------------------------------------------------------------------------------------------------------------- |
| [NoPartyIDs](https://www.onixs.biz/fix-dictionary/4.4/tagNum_453.html)    | 453 | `2`                                                                                                                                                |
| _First Group_                                                             |     |                                                                                                                                                    |
| [PartyID](https://www.onixs.biz/fix-dictionary/4.4/tagNum_448.html)       | 448 | The API session key of the REST or FIX session that placed the order; "UI" when placed using the website.                                          |
| [PartyRole](https://www.onixs.biz/fix-dictionary/4.4/tagNum_452.html)     | 452 | `11 = Order Origination Trader`                                                                                                                    |
| [PartyIDSource](https://www.onixs.biz/fix-dictionary/4.4/tagNum_447.html) | 447 | `D = Proprietary/Custom Code`                                                                                                                      |
| _Second Group_                                                            |     |                                                                                                                                                    |
| [PartyID](https://www.onixs.biz/fix-dictionary/4.4/tagNum_448.html)       | 448 | The [OnBehalfOfCompID `<115>`](https://www.onixs.biz/fix-dictionary/4.4/tagNum_115.html) assigned to the account the order was placed on behalf of |
| [PartyRole](https://www.onixs.biz/fix-dictionary/4.4/tagNum_452.html)     | 452 | `1 = Executing Firm`                                                                                                                               |
| [PartyIDSource](https://www.onixs.biz/fix-dictionary/4.4/tagNum_447.html) | 447 | `D = Proprietary/Custom Code`                                                                                                                      |