When I go to "Add permissions," "application permissions" is grayed out and I can only select "delegated permissions."
My understanding is that application permissions is right for the console app because it runs on the back-end and users don't sign into it.
From the help text for "application permissions":
Your application runs as a background service or daemon without a signed-in user.
The help text for "delegated permissions":
Your application needs to access the API as the signed-in user.
Why is "application permissions" disabled?
Solutions :
manifest:
"appRoles": [ { "allowedMemberTypes": [ "Application" ], "description": "Apps that have this role have the ability to invoke my API", "displayName": "Can invoke my API", "id": "fc803414-3c61-4ebc-a5e5-cd1675c14bbb", "isEnabled": true, "lang": null, "origin": "Application", "value": "myTestRole" } ]
Then the application permission will show up.