REST Api returns empty data in Postman

Question

Hi all,

I am using the SharePoint REST API to get the data, but it returns the empty data in Postman. When I put the same url in browser there I can see number of items were returned.

Answer 1

Hi @gokulnath palani ,
I can reproduce your issue when I get something wrong in App's Permission Request XML.
Please try following code to reset the App's Permission Request XML in the link:
https://YourSharePointOnlineSiteUrl/_layouts/15/appinv.aspx

<AppPermissionRequests AllowAppOnlyPolicy="true">  
<AppPermissionRequest Scope="http://sharepoint/content/sitecollection" Right="FullControl" />  
</AppPermissionRequests>  

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Answer 2

using of SP REST Api in Postman usually requires authentication. You may add cookies to your Postman requests by copying them from browser: in browser open dev tools F12 > Network tab and refresh the page. After that copy cookies from request headers and past them to Postman request settings