Hello,
Thank you for reaching out to Rank Math and for bringing your concern to our attention. I apologize for any inconvenience this issue may have caused you.
Please be aware that Rank Math typically only deals with adding the default language to your sitemap. Other languages are automatically handled by the translation plugin you use, which adds a hreflang to each page, letting Google know that it is a translated version of another page.
It is not necessary to have the translated pages in your sitemap. This is perfectly acceptable and in line with Google’s guidelines:
https://developers.google.com/search/docs/advanced/crawling/localized-versions
However, if you still wish to do so, you can reach out to your translation plugin to confirm how they work with sitemaps – OR you can follow this guide to create a custom sitemap: https://rankmath.com/kb/custom-sitemaps/
I hope this information is helpful to you.
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.