Error: “The page you opened does not belong to One Identity Password Manager" (4216280)

When attempting to connect to the Self Service site in the SPE (Secure Password Extension), the site fails with the error:
“The page you opened does not belong to One Identity Password Manager”

STATUS

This is expected functionality if the URL is set without the /PMSelfService site in the URL. The SPE is designed to check if the site is a Password Manager Self Service site. The use of  DNS aliases or IIS Redirects is not supported.

WORKAROUND

Use the following format when setting the Self Service URL:

Correct:
https://password.domain.com/PMSelfService

Incorrect:
https://password.domain.com