Hello,
Thank you for getting in touch with us.
That is not a “requirement” from Rank Math but from Google and it is a required Schema field. Not putting anything there will get you errors in the Schema testing tool.
You should put the actual book URL in that field. For example, if you are talking about a book that is available on Amazon, then put that there. If you are selling it on your website, put in the landing page. If you have your own book, put in the URL of the page from your publisher’s website.
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.
