Infor LN Use-Up: Handling Old Material in Engineering Changes
infor ln use up
Also searched as
- infor ln use up old material engineering change
- infor ln phase out item use up stock
- infor ln engineering change order effectivity
Short answer
Use-up means consuming existing stock of an old component or item before the new version takes over when an engineering change is introduced. In Infor LN you model it through the change's effectivity (a date or an effectivity unit) so the old item stays valid in the BOM until its stock is expected to run out, and planning then switches demand to the new item. Exact session names vary by version.
Applies to: Infor LN 10.x with Engineering Data Management and Enterprise Planning; verify field names in your own release
How to set up a use-up change
- 1Create the engineering change (change order) that introduces the new item or revised BOM component and link the affected items and BOMs.
- 2Decide the change type for old material: use up existing stock, scrap it, or rework it, and record this decision on the change.
- 3On the old BOM line set an expiry (out) date or effectivity unit based on when you expect existing stock and open supplier orders to be consumed.
- 4On the new BOM line set the matching start (in) date or unit so the two lines do not overlap or leave a gap.
- 5Reduce or cancel open purchase orders for the old item where appropriate, so you do not buy more of what you are phasing out.
- 6Run planning and confirm that planned orders for the old item stop at the cut-over and the new item takes over.
- 7Release the change and review the exceptions list for orders that still reference the old item.
Date versus unit effectivity
A date cut-over is simple: the old component is valid until a date, the new one from the same date. The risk is that stock runs out earlier or later than the date, so you either stall production or strand parts. An effectivity-unit cut-over ties the change to a serial, lot or build number, which suits products built to a defined sequence.
Use the date when demand is steady and use units when the product is configured or serialised and the change must apply to a precise point in production.
How planning sees it
Planning explodes the BOM using the components valid on each requirement date. Before the cut-over it generates demand for the old item, which consumes stock and open orders. After it, demand shifts to the new item. Open orders for the old item beyond the cut-over appear as exceptions to reschedule or cancel.
To avoid orphaned stock, check inventory of the old item against the forecast demand up to the cut-over and set the date near the point stock covers. Anything left needs a disposition: scrap, rework or sell as a spare.
Spare parts and aftermarket
An old item that is no longer in the BOM may still be needed as a spare for installed products. Keep it active for service demand even when production stops using it, and do not delete or obsolete the item record just because manufacturing has moved on.
Document the superseded relationship so service staff know the new part replaces the old one and whether the two are interchangeable.
Try it here, free
Engineering Change Order (ECO) Template
An ECO and ECN document template with affected items, effectivity, stock disposition and implementation tasks, exportable as PDF or Word.
Common pitfalls
- !Gaps or overlaps between old and new BOM line dates produce missing or double demand.
- !Leaving open purchase orders for the old item after the decision to phase out.
- !Marking the old item obsolete while service still needs it as a spare.
- !Using a date cut-over for serialised products where a unit cut-over is required.
How an ERP-grounded AI assistant handles this
Netray adds a private AI layer on top of the Infor LN you already run, including on-prem installs. ERPray answers questions in plain language over LN data read-only, shows the query it ran and respects LN roles, so a consultant can ask the question instead of hunting for the session. The model runs on your own GPUs, nothing leaves your network, and any write-back needs a human approval. Cloud-hosted LN works too, but the design is tuned for on-prem and air-gapped sites. For pure navigation questions, LN's own session search and help are often enough.
Frequently asked questions
What does use-up mean in an engineering change?
It means exhausting existing stock of the old component before the replacement takes over, instead of scrapping that stock the day the change is released.
How does LN know when to stop using the old item?
Through the validity of the old BOM line, set by an expiry date or an effectivity unit. Planning only explodes components valid on the requirement date.
What happens to stock left after the cut-over?
It stays in inventory until you disposition it: scrap, rework, return to supplier, or keep as a service spare.
Can I change the use-up date later?
Yes, by adjusting the effectivity on the BOM lines, but re-run planning afterwards and review the exceptions it raises.
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Free tools
- Engineering Change Order (ECO) TemplateAn ECO and ECN document template with affected items, effectivity, stock disposition and implementation tasks, exportable as PDF or Word.
- Infor LN Change Request Form TemplateFill-in change request form for LN and Baan changes, covering scope, impact, testing, rollback and sign-off.
- Engineering Change Effectivity and Disposition Terms ReferenceSearchable table of ECO and ECN vocabulary: effectivity types, stock disposition choices, change classes and related document terms, with how each shows up in an ERP.
ERP fixes and how-tos
- Engineering Change Impact on Open OrdersHow to find every work order, purchase order, stock position and customer order touched by an engineering change before you release it, and decide dispositions.
- ECO and ECN Process Across PLM and ERPHow an engineering change moves from ECR to ECO to ECN, where PLM stops and ERP starts, who approves what, and how to stop changes slipping past planning.
- Infor LN planning BOM: how it works, setup and use (and what people mean by SIC planning)How a planning BOM works in Infor LN Enterprise Planning, how to set it up and use it for family-level planning, and a note on SIC planning searches.
Guides
- Infor LN Engineering Change Order and ECN ManagementManage engineering changes in Infor LN with ECO/ECN workflows, BOM effectivity, revision control, and impact analysis for controlled product change processes.
- Infor LN Production Order Management and Control SetupConfigure Infor LN production control with production order types, routing setup, material issuing methods, and shop floor integration for manufacturing.
- Infor LN MRP Planning Setup and Parameter ConfigurationConfigure MRP planning in Infor LN with planning parameters, order policies, safety stock rules, and demand pegging for optimal material requirements.
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- AI for Engineering Change Impact on BOMs, Routings, and Open OrdersAI reads a proposed ECO against live BOM, routing, and open order data to show engineering exactly what a change touches before it gets released.
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