Sharepoint Authentication from Azure app

Hi ,

I am trying to setup new Azure connected system to upload document to Sharepoint , I have done all the setup as mentioned in the below appian link

Integrating SharePoint with Appian's Connected System - Appian 24.4

now error I am getting admin approval required when I tried to authrize this connected system only access which I am not able to provide is this :- 

1. Click Application Permissions.
2. Select the following permissions:
   • Sites.Read.All
   • Sites.ReadWrite.All

My origination is a bank and they don't grant above 2 permissions to any app, is there any work around in Appian to resolve this as I am blocked due to this only and getting below mentioned error in Appian.