update on documentation for security limit on throttling (SharePoint#9821)

* addition for user enumeration limit

* fix the date

* corrected grammar

* fixed ms.date

Author: killerewok2000

docs/general-development/how-to-avoid-getting-throttled-or-blocked-in-sharepoint-online.md

@@ -1,7 +1,7 @@
 ---
 title: Avoid getting throttled or blocked in SharePoint Online
 description: Learn about throttling in SharePoint Online and learn how to avoid being throttled or blocked.
-ms.date: 07/01/2024
+ms.date: 07/26/2024
 ms.assetid: 33ed8106-d850-42b1-8d7f-5ba83901149c
 ms.localizationpriority: high
 ---
@@ -230,6 +230,9 @@ If you have applications or components, that are causing your people search requ
 1. Try consolidating the requests into a single query. For example, instead of making 10 simultaneous queries for `WorkEmail:[email protected]`, `WorkEmail:[email protected]`,..., `WorkEmail:[email protected]`, try the single query, `WorkEmail:[email protected] WorkEmail:[email protected] ... WorkEmail:[email protected]`.
 1. Consider using the [Microsoft Graph API](/graph/search-concept-person) if a high-request-volume scenario (in excess of 25 requests per second) is truly necessary.
 
+### When accessing OneDrive sites
+When a client makes excessive attempts to access many OneDrive site collections that do not exist, we may throttle requests from that client's IP address. The client will receive an HTTP 429 response when accessing any OneDrive site collection during the throttling period.
+
 ## What should you do if you get blocked in SharePoint Online?
 
 Blocking is the most extreme form of throttling. We rarely ever block a tenant unless we detect long-term, excessive traffic that may threaten the overall health of the SharePoint Online service. We apply blocks to prevent excessive traffic from degrading the performance and reliability of SharePoint Online. A block - which is placed at the app or user level - prevents the offending process from running until you fix the problem. If we block your subscription, you must take action to modify the offending processes before the block can be removed.