API returns 401 for newly created sites.

Question

I am using API to connect to SP sites details. It works perfectly if the site is old. But when I create a new site ,upload some documents ,now if I try to hit the API it returns 401 with
"{"error":{"code":"AF10001","message":"The permission set () sent in the request does not include the expected permission."}}"

TargetURL=https://manage.office.com/api/v1.0/f60ddc44-81aa-4051-8cb3-4642acf87c23/activity/feed/subscriptions/content?contentType=DLP.All&startTime=2022-10-20T04:54:35Z&endTime=2022-10-20T05:24:35Z

App has the permission

Microsoft Graph
Sites.ReadWrite.All

Microsoft Graph
Directory.Read.All
Read directory data

Office 365 Management APIs
ActivityFeed.Read
Read activity data for your organization

Answer 1

Hello @Backend Scale

Thanks for reaching out!

Possible reasons you're getting this error message:

1. The above error can occur because of an invalid/expired Client Secret being used. This can be fixed by generating a new Client Secret for the Azure AD application.
2. Incorrect permissions- Refer this for more details.
3. Not using correct token to call O365 Management API with required permissions.

Note: Make sure you've requested (and granted consent for) all the appropriate API permisions.

Hope this helps.

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