mon94

Author: Markus Vilcinskas

articles/active-directory/reports-monitoring/reference-basic-info-sign-in-logs.md

@@ -13,7 +13,7 @@ ms.topic: reference
 ms.tgt_pltfrm: na
 ms.workload: identity
 ms.subservice: report-monitor
-ms.date: 12/17/2021
+ms.date: 05/02/2022
 ms.author: markvi
 ms.reviewer: besiler
 
@@ -88,12 +88,12 @@ The type of a user. Examples include `member`, `guest`, or `external`.
 
 This attribute describes the type of cross-tenant access used by the actor to access the resource. Possible values are: 
 
-- `none`
-- `b2bCollaboration`
-- `b2bDirectConnect`
-- `microsoftSupport`
-- `serviceProvider`
-- `unknownFutureValue` 
+- `none` - A sign-in event that did not cross an Azure AD tenant's boundaries.
+- `b2bCollaboration`- A cross tenant sign-in performed by a guest user using B2B Collaboration.
+- `b2bDirectConnect` - A cross tenant sign-in performed by a B2B.
+- `microsoftSupport`- A cross tenant sign-in performed by a Microsoft support agent in a Microsoft customer tenant.
+- `serviceProvider` - A cross-tenant sign-in performed by a Cloud Service Provider (CSP) or similar admin on behalf of that CSP's customer in a tenant
+- `unknownFutureValue` - A sentinel value used by MS Graph to help clients handle changes in enum lists. For more information, see [Best practices for working with Microsoft Graph](https://docs.microsoft.com/graph/best-practices-concept).
 
 If the sign-in did not the pass the boundaries of a tenant, the value is `none`.