The user has been granted "Full Control" to a SharePoint Online library with Modern template. I have full control to the site and I am able to created Folders inside that library and I am able to view the library in Modern SharePoint template.
But the user whom I gave Full Control access, is unable to create folders inside the library and getting "Attempted to perform an unauthorized operation"
Getting ok response from API but while posting getting this. Please help ASAP as it effecting our application from 3 days.