Evidence that misconduct or circumstances would have arisen but were prevented from occurring, for example by measures put in place by the supplier, should be taken into account.
Dylid ystyried tystiolaeth sy'n dangos y byddai camymddwyn neu amgylchiadau wedi digwydd, ond eu bod wedi cael eu hatal rhag digwydd, er enghraifft trwy fesurau a roddwyd ar waith gan y cyflenwr.