Only one error found on doing yum update, but it seems to have installed the rpm anyway.
Updating : selinux-policy-sandbox-3.13.1-102.el7_3.4.noarch 129/366 Failed to resolve booleanif statement at /etc/selinux/targeted/tmp/modules/400/sandbox/cil:86 semodule: Failed! Cheers Bill Maidment