|| $self->ut_numbern('delay_start')
|| $self->ut_foreign_keyn('successor', 'part_pkg', 'pkgpart')
|| $self->ut_foreign_keyn('family_pkgpart', 'part_pkg', 'pkgpart')
+ || $self->ut_alphan('agent_pkgpartid')
|| $self->SUPER::check
;
return $error if $error;