expired certificatemeans a certificate that is no longer valid;
group auditingmeans a process in which the approach to auditing activities can be defined at group level;
monitoring auditmeans an audit carried out by a certification body during the monitoring period to verify the monitoring of the stored carbon and any reversal that may have occurred;
non-conformitymeans a failure by an operator or a certification body to comply with the rules and procedures, established by the certification scheme, of which they are members or under which they operate.
terminated certificatemeans a certificate that has been voluntarily cancelled while it is still valid;
withdrawn certificatemeans a certificate that has been permanently cancelled by the certification body or the certification scheme;