According to
https://community.broadcom.com/enterprisesoftware/blogs/vijaya-kumar-dasari1/2021/04/09/ca-harvest-scm-v1304-certifications-for-suse-15-re?CommunityKey=875def62-85de-4797-9dc1-7a31010427b8
SCM 13.0.4 is certified for Linux 8. However, there is no public document stating 13.0.3 is certified for Linux 8 and in order to install/upgrade to 13.0.4, 13.0.3 would need to be installed first so the question becomes can someone install 13.0.3 on Linux 8?
Release : 13.0.3
Component : RAPID IMPLEMENTATION MANAGER
Yes.
Though it is not stated explicitly, the installation path implies that 13.0.3 is also certified for Linux 8.