yast2-migration-sle from YaST:openSUSE:15.4 project
Select Your Operating System
Add repository and install manually
For openSUSE Leap 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/YaST:openSUSE:15.4/openSUSE_Leap_15.4/YaST:openSUSE:15.4.repo zypper refresh zypper install yast2-migration-sle