Engineering Change Order: Process Flow


When a stakeholder requests an Engineering Change Order (ECO) for product design, an essential set of steps determines whether implementing the change would be beneficial or harmful to the company. The process flow for an ECO requires stages that ensure the company receives the most value for making the change. Let's explore the various steps of an ECO process flow.


Machine shop floor with people working

ECO Request

After an initial release, there are a few factors that could lead to a call for change in product design. Read more about these factors in the article "What is Engineering Change Order" here. Once a stakeholder identifies the problem, the scope of the issue and its possible impact are estimated. If the change appears to be a necessity and feasible, the requestor then identifies parts, components, and documentation that might be affected. They will also estimate costs and list the resources required to implement the change.



Product management then receives the ECO request and determines whether to move forward with implementing the change. The ECO request is circulated for review and discussion among key stakeholders such as engineers, quality control, business executives, and external partners when appropriate. Product management analyzes the opportunity cost, and if they agree to an ECO, begin to determine a solution to implement.


ECO Creation

Product management then generates an ECO after agreeing to the improvement or repair of the design. The ECO lists the items, assemblies, and documentation being changed.


Engineer discussing process drawing with machinist

ECO Implementation

Using the information listed in the ECO, those responsible for implementation make the requested change.


Revision (Release again)

Once the engineering team corrects the requested change, manufacturing receives the revision of the product design. The process can be repeated as many times as necessary.



In today's continually changing environment, companies need to be able to adapt quickly and efficiently when it is necessary to make a change in product design. Having a secure ECO process is critical to ensure that proposed changes are appropriately reviewed, especially if teammates work in different regions. A reliable, universal ECO process within a company can save time and money by avoiding miscommunication.