baseTask: delta (deprecated)

Namespace: microsoft.graph

Important

APIs under the /beta version in Microsoft Graph are subject to change. Use of these APIs in production applications is not supported. To determine whether an API is available in v1.0, use the Version selector.

Caution

The to-do API set built on baseTask is deprecated as of May 31, 2022, and will stop returning data on August 31, 2022. Please use the API set built on todoTask.

Get a set of baseTask resources that have been added, deleted, or updated in a specific baseTaskList.

A delta function call for baseTask resources in a baseTaskList is similar to a GET request, except that by appropriately applying state tokens in one or more of these calls, you can query for incremental changes in the baseTask in that baseTaskList. This allows you to maintain and synchronize a local store of a user's baseTask resources without having to fetch the entire set from the server every time.

Permissions

Choose the permission or permissions marked as least privileged for this API. Use a higher privileged permission or permissions only if your app requires it. For details about delegated and application permissions, see Permission types. To learn more about these permissions, see the permissions reference.

Permission type	Least privileged permissions	Higher privileged permissions
Delegated (work or school account)	Tasks.Read	Tasks.ReadWrite
Delegated (personal Microsoft account)	Tasks.Read	Tasks.ReadWrite
Application	Not supported.	Not supported.

HTTP request

GET /me/tasks/lists/{baseTaskListId}/tasks/delta
GET /users/{userId|userPrincipalName}/tasks/lists/{baseTaskListId}/tasks/delta

Query parameters

Tracking changes in a baseTask collection incurs a round of one or more delta function calls. If you use any query parameter (other than $deltatoken and $skiptoken), you must specify it in the initial delta request. Microsoft Graph automatically encodes any specified parameters into the token portion of the @odata.nextLink or @odata.deltaLink URL provided in the response. You only need to specify any desired query parameters once upfront. In subsequent requests, simply copy and apply the @odata.nextLink or @odata.deltaLink URL from the previous response, as that URL already includes the encoded, desired parameters.

Query parameter	Type	Description
$deltatoken	string	A state token returned in the @odata.deltaLink URL of the previous delta function call for the same baseTask collection, indicating the completion of that round of change tracking. Save and apply the entire @odata.deltaLink URL including this token in the first request of the next round of change tracking for that collection.
$skiptoken	string	A state token returned in the @odata.nextLink URL of the previous delta function call, indicating there are further changes to be tracked in the same baseTask collection.

OData query parameters

• Delta query support $filter $top, and $expand query parameters for baseTask.
• There is no support for $search.

Request headers

Name	Type	Description
Authorization	string	Bearer {token}. Required.
Prefer	string	odata.maxpagesize={x}. Optional.

Request body

Don't supply a request body for this method.

Response

If successful, this function returns a 200 OK response code and a baseTask collection in the response body.

Examples

Request

HTTP

GET https://graph.microsoft.com/beta/me/tasks/lists/AAMkAGVjMzJmMWZjLTgyYjgtNGIyNi1hOGQ0LWRjMjNmMGRmOWNiYQAuAAAAAAAboFsPFj7gQpLAt-6oC2JgAQCQ47jE5P--SoVECqTdM17RAAAB4mDIAAA=/tasks/delta

JavaScript

const options = {
	authProvider,
};

const client = Client.init(options);

let delta = await client.api('/me/tasks/lists/AAMkAGVjMzJmMWZjLTgyYjgtNGIyNi1hOGQ0LWRjMjNmMGRmOWNiYQAuAAAAAAAboFsPFj7gQpLAt-6oC2JgAQCQ47jE5P--SoVECqTdM17RAAAB4mDIAAA=/tasks/delta')
	.version('beta')
	.get();

Important

Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Response

Note: The response object shown here might be shortened for readability.

HTTP/1.1 200 OK
Content-Type: application/json

{
    "@odata.context": "https://graph.microsoft.com/beta/$metadata#Collection(baseTask)",
    "@odata.deltaLink": "https://graph.microsoft.com/beta/me/tasks/lists/AAMkAGVjMzJmMWZjLTgyYjgtNGIyNi1hOGQ0LWRjMjNmMGRmOWNiYQAuAAAAAAAboFsPFj7gQpLAt-6oC2JgAQCQ47jE5P--SoVECqTdM17RAAAB4mDIAAA=/tasks/delta?$deltatoken=AVCnFFj2r7PtnjtkD-g_6dgDSPbEboZhaMYEytpd57pcJMrR9oGkCIjK_dyVkhNB1EQn1zcQt7YZTwCS0V5MNQo6Iy0-T0csAkLZTMlbiII.lVEHqD5xdDrH30csYKP6tEvoYa3WtFhmYLtKBSxCPpQ",
    "value": [
        {
            "@odata.type": "#microsoft.graph.task",
            "@odata.etag": "W/\"kOO4xOT//0qFRAqk3TNe0QAAAymRBQ==\"",
            "importance": "normal",
            "status": "notStarted",
            "displayName": "Read documentation",
            "createdDateTime": "2021-11-15T13:16:53.0831814Z",
            "lastModifiedDateTime": "2021-11-15T13:17:08.8273666Z",
            "id": "AAkALgAAAAAAHYQDEapmEc2byACqAC-EWg0AkOO4xOT--0qFRAqk3TNe0QAAAy35RwAA",
            "body": {
                "content": "",
                "contentType": "text"
            },
            "parentList": {
                "id": "AAMkAGVjMzJmMWZjLTgyYjgtNGIyNi1hOGQ0LWRjMjNmMGRmOWNiYQAuAAAAAAAboFsPFj7gQpLAt-6oC2JgAQCQ47jE5P--SoVECqTdM17RAAAB4mDIAAA="
            }
        }
    ]
}