On our multilanguage site, we have a blog page which is unpublished in one of the four locales. However, aardvark generates a hreflang tag for the unpublished page.
<link rel="alternate" href="https://site.io/blog" hreflang="en-GB">
<link rel="alternate" href="https://site.nl/blog" hreflang="nl-NL">
<link rel="alternate" href="https://site.de/blog" hreflang="de-DE">
<link rel="alternate" href="https://site.es/blog" hreflang="es-ES"> <-- The corresponding page is unpublished, resulting in a 404
On our multilanguage site, we have a blog page which is unpublished in one of the four locales. However, aardvark generates a hreflang tag for the unpublished page.