Glossary Term: Engineering Change Notice (ECN)

An Engineering Change Notice (ECN) is an official notice in change management that a change has been approved. The ECN communicates the details of the approved change and authorizes the manufacturer to implement the change to the production. The ECN is used to ensure that contract manufacturers and partners are producing products to standard when changes are made.

The ENC is issued when the change process begins, generally when a problem arises and is reported by a customer, manufacturing partner or internal stakeholder. The problem is then analyzed and corrective action is determined.

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