[opensuse-arm] openSUSE_Factory_ARM: systemd-tmpfiles: command not found

HI! I'm building in a local OBS branch: https://build.opensuse.org/package/show/home:stroeder:branches:server:dns/un... All builds work ok but all openSUSE_Factory_ARM builds fail with this message: /.build_patchrpmcheck_scr: line 22: systemd-tmpfiles: command not found postinstall script of unbound-1.5.5rc1-21.1.armv6hl.rpm failed Any clue? Ciao, Michael.