looks like efibootmrg is already installed. Do you have another possible solution?
“sudo zypper install efibootmgr Refreshing service 'Basesystem_Module_15_SP1_x86_64'. Refreshing service 'Containers_Module_15_SP1_x86_64'. Refreshing service 'Desktop_Applications_Module_15_SP1_x86_64'. Refreshing service 'Development_Tools_Module_15_SP1_x86_64'. Refreshing service 'Legacy_Module_15_SP1_x86_64'. Refreshing service 'Python_2_Module_15_SP1_x86_64'. Refreshing service 'SUSE_Linux_Enterprise_Server_15_SP1_x86_64'. Refreshing service 'SUSE_Package_Hub_15_SP1_x86_64'. Refreshing service 'Server_Applications_Module_15_SP1_x86_64'. Loading repository data... Reading installed packages... 'efibootmgr' is already installed. No update candidate for 'efibootmgr-14-2.8.x86_64'. The highest available version is already installed. Resolving package dependencies...