UEL users are unable to access survey and face" URL No Longer Exists" error.
This is working as expected, authenticated access with UEL fails due to license constraints and this cannot be granted by permission sets because assignment is not allowed for the license.
As a workaround configure the invitation to allow unauthenticated participation by setting isAuthenticated = false and enabling Unique link = true, so that recipients access the survey without logging in while preserving invitation integrity.
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