[SLE15 SP2] RMT and PXE

I am following this guide :
https://documentation.suse.com/sles/15-SP1/single-html/SLES-rmt/index.html (I am syncing packages now)
and about to start:
https://documentation.suse.com/sles/15-SP2/html/SLES-all/cha-deployment-prep-pxe.html#sec-deployment-dhcp-server
The question is regarding this step - https://documentation.suse.com/sles/15-SP2/html/SLES-all/cha-boot-parameters.html#sec-boot-parameters-list-install-source :

is there all the content I need downloadable via RMT exclusively or do I still need to mount the installation iso and serve its content to the client about to boot?

It is not done via RMT. The content for tftp can be provided via the tftpboot-installation-SLE-15-SP2-x86_64 rpm which matches your SLE release you work on. Say on 15 SP2 you cannot find 15 SP1 tftboot content or any 12 release at all in an rpm form, which means you need to provide these a different way to your SLE15 SP2 based host.

Solved.