Vendor Managed Inventory - Precision Inventory at Every Production Node

What VMI needs from your side

VMI is a data arrangement before it is a warehousing arrangement. The operational side is straightforward for anyone who runs warehouses; the part that determines whether a deployment works is the quality of the signals it runs on.

Before go-live we work through the following with your team. Where the data is not yet clean, that becomes part of the implementation rather than a reason to delay it — but it is better to know at the start than to discover it in week six.

• An accurate item master: part numbers, unit of measure, and packaging configuration that match what physically arrives
• Agreed minimum and maximum levels per part, with the assumptions behind them written down
• A consumption signal we can read — production schedule, issue transactions, or scan events at the line
• Realistic supplier lead times, including the variability, not just the quoted figure
• Read access to the relevant ERP tables or a scheduled extract, and someone on your side who owns the interface
• A named exception owner on both sides, and an agreed response time when a trigger is missed

Where VMI fits, and where it does not

VMI earns its keep on parts with steady, predictable consumption and enough value or volume that carrying them is expensive. Fasteners, standard components, packaging, consumables and high-runner assemblies are the usual candidates. The more regular the draw, the better the model works.

It is a poor fit in several situations, and we would rather say so before an implementation than during one:

• Parts with erratic or project-driven demand, where there is no consumption pattern to replenish against
• Very low-value, very low-volume items, where the administrative overhead outweighs the carrying cost saved
• Engineering-change-heavy parts, where stock on the floor risks becoming obsolete faster than it is consumed
• Situations where consumption cannot be reported reliably — VMI without a trustworthy signal is just stock sitting somewhere else

VMI, consignment and just-in-time are not interchangeable

These three get used as though they mean the same thing, and the differences are the part that affects your balance sheet. Consignment describes who owns the stock. Just-in-time describes when it arrives. VMI describes who decides that it should be replenished.

You can run consignment without VMI, by holding supplier-owned stock but still raising your own replenishment calls. You can run VMI without consignment, by owning the stock while delegating the replenishment decision. Most of the arrangements we operate combine the two, but they are separate choices and worth making deliberately.

Read the full comparison: VMI vs consignment inventory