Update search-howto-index-sharepoint-online.md

Updating SharePoint documentation to reflect some limitations and considerations.

Author: gmndrg

articles/search/search-howto-index-sharepoint-online.md

@@ -9,7 +9,7 @@ manager: liamca
 
 ms.service: cognitive-search
 ms.topic: how-to
-ms.date: 09/08/2022
+ms.date: 02/22/2023
 ---
 
 # Index data from SharePoint document libraries
@@ -19,15 +19,13 @@ ms.date: 09/08/2022
 
 This article explains how to configure a [search indexer](search-indexer-overview.md) to index documents stored in SharePoint document libraries for full text search in Azure Cognitive Search. Configuration steps are followed by a deeper exploration of behaviors and scenarios you're likely to encounter.
 
-> [!NOTE]
-> SharePoint supports a granular authorization model that determines per-user access at the document level. The SharePoint indexer does not pull these permissions into the search index, and Cognitive Search does not support document-level authorization. When a document is indexed from SharePoint into a search service, the content is available to anyone who has read access to the index. If you require document-level permissions, you should investigate [security filters to trim results](search-security-trimming-for-azure-search-with-aad.md) of unauthorized content. 
 
 ## Functionality
 
 An indexer in Azure Cognitive Search is a crawler that extracts searchable data and metadata from a data source. The SharePoint indexer will connect to your SharePoint site and index documents from one or more document libraries. The indexer provides the following functionality:
 
 + Index content and metadata from one or more document libraries.
-+ Incremental indexing, where the indexer identifies which files have changed and indexes only the updated content. For example, if five PDFs are originally indexed and one is updated, only the updated PDF is indexed.
++ Incremental indexing, where the indexer identifies which file content or metadata have changed and indexes only the updated data. For example, if five PDFs are originally indexed and one is updated, only the updated PDF is indexed.
 + Deletion detection is built in. If a document is deleted from a document library, the indexer will detect the delete on the next indexer run and remove the document from the index.
 + Text and normalized images will be extracted by default from the documents that are indexed. Optionally a [skillset](cognitive-search-working-with-skillsets.md) can be added to the pipeline for [AI enrichment](cognitive-search-concept-intro.md). 
 
@@ -466,6 +464,29 @@ You can also continue indexing if errors happen at any point of processing, eith
 }
 ```
 
+## Limitations and considerations
+
+These are the limitations of this feature:
+
++ Indexing [SharePoint Lists](https://support.microsoft.com/office/introduction-to-lists-0a1c3ace-def0-44af-b225-cfa8d92c52d7) is not supported.
+
++ If a SharePoint file content and/or metadata has been indexed, renaming a SharePoint folder in its parent hierarchy is not a condition that will re-index the document.
+
++ Indexing SharePoint .ASPX site content is not supported.
+
++ [Private endpoint](search-indexer-howto-access-private.md) is not supported.
+
++ SharePoint supports a granular authorization model that determines per-user access at the document level. The SharePoint indexer does not pull these permissions into the search index, and Cognitive Search does not support document-level authorization. When a document is indexed from SharePoint into a search service, the content is available to anyone who has read access to the index. If you require document-level permissions, you should investigate [security filters to trim results](search-security-trimming-for-azure-search-with-aad.md) of unauthorized content. 
+
+
+These are the considerations when using this feature:
+
++ Since changing file metadata or content in SharePoint will trigger document processing, when [AI enrichment](cognitive-search-concept-intro.md) is configured, consider using [Incremental enrichment and caching](cognitive-search-incremental-indexing-conceptual.md) so skill re-processing is avoided, while the cache is valid.
+
++ If there is a requirement to implement a SharePoint content indexing solution with Cognitive Search in a production environment, consider create a custom connector using [Microsoft Graph Data Connect](../microsoftgraph/microsoft-graph-docs/blob/main/concepts/data-connect-concept-overview.md) with [Blob indexer](search-howto-indexing-azure-blob-storage.md) and [Microsoft Graph API](../microsoftgraph/microsoft-graph-docs/blob/main/concepts/use-the-api.md) for incremental indexing.
+
+
+
 ## See also
 
 + [Indexers in Azure Cognitive Search](search-indexer-overview.md)