Then click Send and you should receive a 201 Created success.
Remove Sites.FullControl.All access
Back on the Azure Application, go to API Permissions and remove both permission and consent for Sites.FullControl.All, for both SharePoint and Microsoft Graph by clicking on the three dots next to the permission
Check that it works
• On Postman, create a new request
• Keep it as GET and leave the body empty
• Reuse the same Authorization setup from the previous section
• Press Send
If you get a 200 OK response, the access is now set up properly