Workflow or API calls:
SMART on FHIR Launch using the same setup that works with our test app, does not allow us to reach the patient portal login page for a Cerner client's test portal.
We confirmed the call we made in the browser sent the redirect URI that matches the list we have in the app
Browser GET request to authorize endpoint:

Application Listing of Redirect URIs:

Expected Result:
Authorized and reach Cerner Patient Portal login page.
e.g. like our test app:

Actual Result:

Correlation ID:
fe2372f7-bf48-4075-b1ac-297db70c911c
The requested redirect URI does not match the one registered for "Fabric Virtual Care - Patient Authentication".
Error Code:
urn:cerner:error:authorization-server:oauth2:grant:invalid-redirect-uri