Hello,
Thanks for contacting us.
You can set the same focus keyword in multiple posts, but it is not recommended. Targeting multiple posts for the same keyword would divide the traffic on your website, and it is also not a good SEO practice.
Under the Additional tests section of the SEO Meta Box, Rank Math notifies you if you have already used the current focus keyword in other posts.
Please refer to this tutorial guide for more details:
https://rankmath.com/kb/score-100-in-tests/#focus-keyword-uniqueness-primary-focus-keyword-only
Hope this helps.
Thank you.
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.