sourceCollection: estimateStatistics

Namespace: microsoft.graph.ediscovery


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.

Run an estimate of the number of emails and documents in the source collection. To learn more about source collections (also known as searches in eDiscovery), see Collect data for a case in Advanced eDiscovery.

This API is supported in the following national cloud deployments.

Global service US Government L4 US Government L5 (DOD) China operated by 21Vianet


One of the following permissions is required to call this API. To learn more, including how to choose permissions, see Permissions.

Permission type Permissions (from least to most privileged)
Delegated (work or school account) eDiscovery.Read.All, eDiscovery.ReadWrite.All
Delegated (personal Microsoft account) Not supported.
Application Not supported.

HTTP request

POST /compliance/ediscovery/cases/{caseId}/sourceCollections/{sourceCollectionId}/estimateStatistics

Request headers

Name Description
Authorization Bearer {token}. Required.

Request body

Do not supply a request body for this method.


If the estimate is started successfully, this action returns a 202 Accepted response code. The response will also contain a Location header, which contains the location of the estimateStatisticsOperation that was created to handle the estimate. Check the status of the estimate operation by making a GET request to the location, when successfully completed, the status will change to succeeded.





HTTP/1.1 202 Accepted
cache-control: private
client-request-id: af32de50-99d9-e3a8-371b-a4f366cc78e7
content-length: 0
content-type: text/plain
request-id: e890176f-640f-4222-9cd8-be26e71c5e5d