Unable to fetch page content through Legacy SharePoint REST API

Question

Hi,

I am trying to fetch the page content of SharePoint Site Pages using the SharePoint Legacy REST API. While I am able to successfully retrieve page content from Communication Sites that is default SharePoint page, I encounter a "403: Forbidden - Unauthorized operation" error when attempting to retrieve content for Site Pages I have created manually.

Scenario:

1. Get page content for Communication Sites: [SUCCESS]
   1. Data Fetching for: https://contoso.sharepoint.com/SitePages/Forms/ByAuthor.aspx
   2. API endpoint used: https://contoso.sharepoint.com/_api/web/lists/getbytitle('Site Pages')/items
   3. 
2. Get page content for other sites: [FORBIDDEN]
   1. Data Fetching for: https://contoso.sharepoint.com/sites/TestStandardTemp/SitePages/Forms/ByAuthor.aspx
   2. API Endpoint used: https://contoso.sharepoint.com/sites/TestStandardTemp/_api/web/lists/getbytitle('Site Pages')/items
   3. 
   4. 

What could be causing the "Forbidden" error when querying the Site Pages from the TestStandardTemp site?

Answer 1

Hi @Anant Hiremath ,

Welcome to Q&A forum!

Sorry for the late update. I tested it and didn't encounter the problem you mentioned. According to the error message, it seems to be a permission problem. But this is a common error. There are many reasons for this error, and the specific cause cannot be determined at present. I did a lot of searching and didn't find an effective solution. We recommend that you use jwt to parse the access token to check the permissions. Or, please explain the verification method you use so that I can reproduce it.

Non-official, just for reference.

In addition, you can use the Graph API to get Site Pages:

GET /sites/{site-id}/pages/microsoft.graph.sitePage

This is my test:

Good day!

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Answer 2

Hi @Yanli Jiang - MSFT, Thanks for the quick response.

Actually, I found out that it's an authentication token issue. The token I used was generated from this API https://accounts.accesscontrol.windows.net/:tenantId/tokens/OAuth/2, but the API to get site data from the legacy SharePoint REST API, which was created by the user, requires a delegated token in order to retrieve the data.