Unable to Give Full Control to SharePoint Online Add-in

Question

I registered an add-in on my SharePoint Online site collection by going to [Site Collection URL]/_layouts/15/AppRegNew.aspx Noted Client ID and Client Secret. Trying to give it FullControl here: [Site Collection URL]/_layouts/15/AppInv.aspx by entering the following XML:

<AppPermissionRequests AllowAppOnlyPolicy="true">  
   <AppPermissionRequest Scope="Site Collection URL" 
    Right="FullControl" />
</AppPermissionRequests>

On 'Do you trust the app page' it does not ask me to give it Full Control but only the following: Let it share its permissions with other users. Let it access basic information about the users of this site.

What am I missing?

Answer 1

The site collection scope url should be http://sharepoint/content/sitecollection instead of your site collection url.

Read this article for more:https://docs.microsoft.com/en-us/sharepoint/dev/sp-add-ins/add-in-permissions-in-sharepoint

The xml should be this.

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