Starting September 8, 2025, every new line item will need to declare whether or not they will serve Eurpoean Union (EU) political ads. Display & Video 360 API and SDF uploads that don't provide declarations will fail. See our deprecations page for more details on how to update your integration to make this declaration.
Required. The ID of the inventory source group to which the assignment will be assigned.
Query parameters
Parameters
Union parameter owner. Required. Identifies the DV360 entity that owns the parent inventory source group. It can be either a partner or an advertiser. owner can be only one of the following:
[null,null,["Last updated 2025-04-02 UTC."],[[["\u003cp\u003eCreates an assignment between an inventory source and an inventory source group using an HTTP POST request.\u003c/p\u003e\n"],["\u003cp\u003eRequires specifying the inventory source group ID and the owner (either partner or advertiser) as parameters.\u003c/p\u003e\n"],["\u003cp\u003eThe request body must contain an AssignedInventorySource object, and a successful response will return the newly created AssignedInventorySource.\u003c/p\u003e\n"],["\u003cp\u003eAuthorization is necessary using the \u003ccode\u003ehttps://www.googleapis.com/auth/display-video\u003c/code\u003e OAuth scope.\u003c/p\u003e\n"]]],["This outlines the process to create an assignment between an inventory source and a group using a POST request to `https://displayvideo.googleapis.com/v3/inventorySourceGroups/{inventorySourceGroupId}/assignedInventorySources`. The `inventorySourceGroupId` is a required path parameter. The request requires one of the query parameters, `partnerId` or `advertiserId`, to define the group owner. The request body and response body is an instance of `AssignedInventorySource`. Authorization requires the `https://www.googleapis.com/auth/display-video` scope.\n"],null,["# Method: inventorySourceGroups.assignedInventorySources.create\n\n| Display \\& Video 360 API is deprecated and will sunset on **October 7, 2025** . Migrate to [Display \\& Video 360 API v4](/display-video/api/reference/rest/v4) before sunset to avoid an interruption in service.\n- [HTTP request](#body.HTTP_TEMPLATE)\n- [Path parameters](#body.PATH_PARAMETERS)\n- [Query parameters](#body.QUERY_PARAMETERS)\n- [Request body](#body.request_body)\n- [Response body](#body.response_body)\n- [Authorization scopes](#body.aspect)\n- [Try it!](#try-it)\n\nCreates an assignment between an inventory source and an inventory source group.\n\n### HTTP request\n\n`POST https://displayvideo.googleapis.com/v3/inventorySourceGroups/{inventorySourceGroupId}/assignedInventorySources`\n\nThe URL uses [gRPC Transcoding](https://google.aip.dev/127) syntax.\n\n### Path parameters\n\n| Parameters ||\n|--------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `inventorySourceGroupId` | `string (`[int64](https://developers.google.com/discovery/v1/type-format)` format)` Required. The ID of the inventory source group to which the assignment will be assigned. |\n\n### Query parameters\n\n| Parameters ||\n|----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| Union parameter `owner`. Required. Identifies the DV360 entity that owns the parent inventory source group. It can be either a partner or an advertiser. `owner` can be only one of the following: ||\n| `partnerId` | `string (`[int64](https://developers.google.com/discovery/v1/type-format)` format)` The ID of the partner that owns the parent inventory source group. Only this partner will have write access to this assigned inventory source. |\n| `advertiserId` | `string (`[int64](https://developers.google.com/discovery/v1/type-format)` format)` The ID of the advertiser that owns the parent inventory source group. The parent partner will not have access to this assigned inventory source. |\n\n### Request body\n\nThe request body contains an instance of [AssignedInventorySource](/display-video/api/reference/rest/v3/inventorySourceGroups.assignedInventorySources#AssignedInventorySource).\n\n### Response body\n\nIf successful, the response body contains a newly created instance of [AssignedInventorySource](/display-video/api/reference/rest/v3/inventorySourceGroups.assignedInventorySources#AssignedInventorySource).\n\n### Authorization scopes\n\nRequires the following OAuth scope:\n\n- `https://www.googleapis.com/auth/display-video`\n\nFor more information, see the [OAuth 2.0 Overview](/identity/protocols/OAuth2)."]]
