How can I publish my application (XAML hosted Win32 application)? Currently wanted only for internal testing purposes such as WNS (push notifications)

Question

Hi,

I am trying out the WNS push notifications for my XAML hosted Win32 application. I have made my application to "package with external location" because the UWP APIs requires package Identity.

Reference: https://github.com/MicrosoftDocs/windows-dev-docs/blob/docs/hub/apps/desktop/modernize/desktop-to-uwp-supported-api.md#apis-that-require-package-identity

It also requires these WNS push notifications to work only if we publish the application on Microsoft store. First thing will this "being my application as a package with external location" will it work for WNS push notifications scenario?

Reference: https://learn.microsoft.com/en-us/windows/apps/design/shell/tiles-and-notifications/windows-push-notification-services--wns--overview#registering-your-app-and-receiving-the-credentials-for-your-cloud-service

But if we go inside the sub-page there it says it requires 'Package SID' which I can't go to that page. This is required while creating Notification Hubs, right? As the screen shots pasted seems to be not updated can't see where this value is available.

Currently I could see only this: