Engineering change management (ECM) is the structured process for reviewing, approving, implementing, and tracking changes to a product or its manufacturing process.
When engineering updates a component or assembly but the shop floor still follows an older bill of materials, work instruction, or routing, the effects can spread quickly. We see the same pattern: scrap, rework, supplier confusion, delayed shipments, and questions about which version is correct.
We treat change control as a practical business discipline that moves a change through proposal, review, approval, and release.
A clear process moves a change from proposal through review, approval, release, and production while preserving traceability. For Canadian manufacturers preparing for autumn schedules, year-end inventory planning, customer commitments, and long-lead purchasing, this control helps you improve products without disrupting active builds.
Why Engineering Change Management Protects Every Build
In practical terms, what is engineering change management? It is the process we use to propose, review, approve, implement, and record changes to products and the way they are made. It covers more than a revised drawing. Engineering change management can govern changes to product specifications, components, multi-level BOMs, routings, work instructions, packaging, quality checks, and production methods.
Products rarely stay still. A component may become unavailable, a customer may request a variation, or engineering may identify a better design. Without engineering change control, each department can end up acting on a different version of the truth. Engineering may have the newest design, while purchasing orders the previous part and production follows an outdated instruction.
Weak change management in manufacturing often shows up in familiar ways:
- Outdated BOMs lead to the wrong materials being picked or ordered.
- Obsolete drawings and instructions remain available on the production floor.
- Purchasing teams make rushed decisions because they learn about a revision too late.
- Excess inventory builds up around parts that are no longer approved.
- Quality results become inconsistent when different builds follow different revisions.
Email threads, spreadsheets, file folders, and verbal updates may work for a small number of changes. As revisions grow, though, these tools make it hard to prove who approved a change, when it took effect, and whether every related record was updated. We recommend treating the engineering change process as a shared operational workflow, not an engineering-only task.
Recognize When Informal Change Practices Stop Scaling
Informal practices usually begin to strain when your operation changes shape. Frequent product revisions, a larger product range, complex BOM structures, more suppliers, multiple facilities, regulated customer expectations, or repeated shop-floor questions about the current revision are all signs that a more structured process is needed.
A seemingly small revision can touch far more than one component. Replacing a part may affect on-hand inventory, supplier lead times, purchasing plans, production schedules, inspection requirements, service documents, and delivery commitments. If teams find out at different times, the business may be left deciding whether to use existing stock, rework it, or hold production.
Clear ownership makes manufacturing change management easier to manage. We generally look for defined responsibilities across the people affected by the change:
- Engineering defines the technical change and related documentation.
- Manufacturing reviews the effect on operations, tooling, and production readiness.
- Purchasing confirms supplier, availability, and inventory implications.
- Quality assesses inspection needs and risks before release.
- Production receives approved instructions only when the change is ready to run.
This shared review prevents a change from reaching the floor before the right people have assessed it. It also gives teams a defined place to raise concerns early, when a problem is easier to address.
Put Engineering Change
Orders at the Centre of Control
An engineering change order, often called an ECO, is the formal record that manages a proposed change from request through implementation. In an ECO manufacturing workflow, we can capture why the change is needed, which products and BOM revisions it affects, which documents need revision, who owns each task, and what approvals are required.
A practical ECO lifecycle follows a clear sequence. The change is submitted, its impact is assessed, and the relevant departments review it. Once approved, teams implement the update, verify that the right records changed, and release it for controlled production use. The engineering change order should maintain version history, showing what changed, when it changed, and who approved it.
That history matters when questions arise later. It helps your team understand whether a specific build used the prior revision or the new one, and whether the correct approvals were in place.
ECOs also bring discipline to BOM change management. An approved revision should update the BOM, components, operations, work instructions, and related records in a controlled order. Without that connection, engineering can move ahead while purchasing and production continue working from older information. With it, each affected team has a clearer path from approved design decision to shop-floor execution.
Connect BOM Change Management to Odoo PLM
Odoo PLM is an approach to PLM for manufacturing that connects engineering changes and manufacturing information in a shared database.
ECOs coordinate controlled updates in one connected environment, so teams aren't reconciling separate spreadsheets, email chains, and folders.
For suitable workflows, Odoo PLM can use an ECO to move a proposed change through review and approval before the revised BOM or manufacturing information is released. Teams can compare BOM revisions, review the affected information, assign approvals, and keep the change record connected to its version history. This creates a traceable path from the proposed change to the approved production version, making it easier to identify what changed, who approved it, and which version should be used.
The difference is not simply storing documents in one place. Odoo PLM can connect a proposed engineering change to the manufacturing data affected by that change. Once approved, revisions can be applied in a controlled manner.
Connected information also improves the quality of discussions before release. When BOM, inventory, purchasing, manufacturing, and quality records are visible together, we can help you assess a revision’s operational effect before it becomes a production issue. That matters when you must decide how existing inventory will be handled, whether supply is available, and when the new revision can realistically take effect.
Build a Change Process Ready for Autumn Production
The right engineering change management approach should match your product complexity, revision frequency, approval needs, traceability expectations, integrations, and plans for growth. It should also reflect how closely engineering and production need to work together. Before autumn production ramps up and supplier ordering cycles tighten, we recommend reviewing how changes currently move through engineering, purchasing, inventory, quality, and the shop floor.
Product changes do not need to stop. The practical goal is to make every approved change visible, traceable, and ready for controlled execution before it reaches production.
Strengthen Change Control With Connected PLM
Kodershop helps manufacturers align engineering, quality, and production workflows in one connected system. Our Odoo PLM solutions can support clearer approvals, revision histories, and production-ready change records. For guidance on shaping a process around your operations, contact us to discuss your requirements.