> ## 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.

# vm_unassignment_started

> vm_unassignment_started event.

This event is triggered when a virtual machine is unassigned from a multiplayer server build.

## Properties

| Name          | Type                                                                                                                      | Description                                                                |
| :------------ | :------------------------------------------------------------------------------------------------------------------------ | :------------------------------------------------------------------------- |
| EntityLineage | [EntityLineage](/services/playfab/api-references/events/data-types/entitylineage)                                         | Entities that this entity is a child of.                                   |
| Payload       | [VmUnassignmentStartedEventPayload](/services/playfab/api-references/events/data-types/vmunassignmentstartedeventpayload) | The multiplayer server virtual machine unassignment started event payload. |

## 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)
- [VmUnassignmentStartedEventPayload](/services/playfab/api-references/events/data-types/vmunassignmentstartedeventpayload.md)
- [vm_assigned](/services/playfab/api-references/events/MultiplayerServers/vm-assigned.md)
- [vm_unhealthy](/services/playfab/api-references/events/MultiplayerServers/vm-unhealthy.md)
- [vm_state_change](/services/playfab/api-references/events/MultiplayerServers/vm-state-change.md)