
Login to your Azure Portal
Search for App registrations

Fill in Name

Select Register
You will now see a page like this
The Application (client) ID value will be used in SharePoint setup in Business Central.

Save value as we are going to use it in Business Central

Click on the "Add a Redirect URI" link
You will then see a page like this:

Click on option

Select Web option
You will then see a page like this:

Select Configure
You will then see a page like this:

Enter line as shown. Replace tenant ID with your Business Central tenant ID. Then select save.
You can find your tenant ID from the URL in your browser. Looks like this:
THE APP IS NOW REGISTERED AND WE JUST NEED TO ADD PERMISSIONS
Select Certificates & secrets

Select option

Select New client secret
A new page will show:

Enter a description

Select from the list. In this example I select 730 days before the secret need renewal.
You will then see a page like this:

Description as entered in the previous step

This is the secret we are going to use in Business Central. Make a note of it!
Once you leave the page you can no longer see the value!
Search for API Permissions
You will the see a page like this:
We are now going to add permissions for
- Dynamics 365 Business Central
- Microsoft Graph
Click on Add a Permission

First assign Dynamics 365 Business Central permissions

The assign Microsoft Graph permissions
When assigning permissions select Application permissions
The permissions should look like this:
Once permissions selected make sure to grant admin consent!
YOU HAVE NOW COMPLETED APP REGISTRATION
Enter values you saved during App registration.

Now request Access Token from SharePoint

Check that you have access to SharePoint
You should now see a page like this:
You can now select Site settings
YOU HAVE NOW COMPLETED SETUP