Hello,
@Minh Bui !
Search by crosswalks is not supported for relations today.
We plan to support this use case in one of the next releases as this is a base scenario, although there is no ETA for this yet.
In the meantime, I suggest you submit this idea to our
Reltio Idea Portal, this will allow you to track the progress of this idea into the platform roadmap.
You can learn more about the Idea Portal
here.
Thank you,
Dmitry