> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# unreal_client_initialization_completed

> unreal_client_initialization_completed event.

This event is triggered when Unreal client initialization is completed.

## Properties

| Name                | Type   | Description                                       |
| :------------------ | :----- | :------------------------------------------------ |
| ClientInstanceId    | String | A unique identifier for this game session.        |
| PartyVersion        | String | The version of the Party native library.          |
| UnrealEngineVersion | String | The version of the Unreal Engine.                 |
| PlatformSDKVersion  | String | The version of the platform SDK.                  |
| OSSPlayFabVersion   | String | The version of the OnlineSubsystemPlayFab plugin. |
| TitleID             | String | The PlayFab title ID.                             |
| OSName              | String | The name of the operating system.                 |
| OSVersion           | String | The version of the operating system.              |
| DeviceMake          | String | The device manufacturer name.                     |
| DeviceModel         | String | The device model name.                            |
| PlatformName        | String | The name of the platform.                         |
| AppName             | String | The application name.                             |
| AppVersion          | String | The application version.                          |

## Common Properties

All V2 PlayStream events are formatted as JSON objects and most share the following common properties:

| Name               | Type                                                                          | Description                                                                               |
| :----------------- | :---------------------------------------------------------------------------- | :---------------------------------------------------------------------------------------- |
| SchemaVersion      | String                                                                        | PlayStream event format version, following a semantic versioning scheme.                  |
| FullName           | [Object](/services/playfab/api-references/events/data-types/fullnameobject)   | Combination of the event name and event namespace to fully specify the event type.        |
| Id                 | String                                                                        | PlayFab-assigned unique identifier for this event.                                        |
| Timestamp          | DateTime                                                                      | The time (in UTC) associated with this event.                                             |
| Entity             | [Object](/services/playfab/api-references/events/data-types/entityobject)     | Details about the entity to which this event applies including Entity Id and Entity type. |
| Originator         | [Object](/services/playfab/api-references/events/data-types/originatorobject) | Object describing the source and source type that initiated this event.                   |
| PayloadContentType | String                                                                        | Specifies the content of the event payload. Default is "JSON".                            |
| Origin Info        | Object                                                                        | Optional field containing info about events originating outside of PlayFab.               |


## Related topics

- [PlayStream event model reference for PlayFab](/services/playfab/api-references/events/index.md)
- [client_initialization_completed](/services/playfab/api-references/events/Networking/client-initialization-completed.md)
- [unity_client_initialization_completed](/services/playfab/api-references/events/Networking/unity-client-initialization-completed.md)
- [XblMultiplayerMatchStatus](/reference/live/xsapi-c/multiplayer_manager_c/enums/xblmultiplayermatchstatus.md)
- [Connect to Cloud-Hosted Unreal Server](/services/playfab/multiplayer/servers/server-sdks/unreal-gsdk/connect-to-mps-hosted-build.md)