Sharepoint API Unauthorized Operation

Question

Hi Experts,

I'm having the error below when invoking the SharePoint API via Postman.

Request URL:

https://<site_domain>/_api/web/GetFolderByServerRelativeUrl('/teams/SuccessFactorPhotoIntegration/Shared%20Documents/Photo')/Files

<?xml version="1.0" encoding="utf-8"?>

<m:error xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">

    <m:code>-2147024891, System.UnauthorizedAccessException</m:code>

    <m:message xml:lang="en-US">Attempted to perform an unauthorized operation.</m:message>

</m:error>

Any suggestion on have to overcome this issue?

Thank you.

Answer 1

Hi @Alves, Andre,

As the error message shows, this is a permission error. I will recommend you to register SharePoint App only to grant access. Here is a nice article about register sharepoint app only and get accesstoken in postman.

https://anoopt.medium.com/accessing-sharepoint-data-using-postman-sharepoint-rest-api-76b70630bcbf

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