What is the issue?
Hreflang tags are important for ensuring that users land on the right language and location version of your website. This report shows pages that have a hreflang tag pointing to another page but have no incoming hreflang references. Hreflang tags must be bidirectional, otherwise it will not work.
How to fix
In the column "Translations (count)" you see how many outgoing hreflang tags there are on this page. Click on this number to open a new window and view each referenced URL. You need to add hreflang tags to these pages that refer back to the webpage below. Learn more about this in our wiki and product insights.
Use Google Analytics data to see pages that contain hreflang tags with errors that receive a high number of sessions. Use this to prioritize what hreflang tags to fix first. Learn more in this article.