An administrative setting enables debug information to be shown when rules are evaluated and is visible for users having the permission 'Access the Rules debug log'. It is displayed in a pre-defined custom block 'Rules Log' which the site administrator must configure in the layout by adding it to their preferred region (e.g. the footer). When doing this the administrator should also set the Visibility condition for this block to be 'User: Permission -- Access the Rules debug log'.

There is also an administrative option to include this Log debug information in the site's system log along with other notifications, warnings and error reports.