Vendor-managed inventory: agree who may replenish and who owns the stock

Vendor-managed inventory can mean that a supplier observes stock and recommends orders, or that it initiates replenishment within an agreed authority. Those models leave different work with the buyer. Before signing an arrangement, describe the decision the supplier may make and the point at which the company becomes committed to a purchase.

Oracle's VMI documentation separates inventory visibility, replenishment requests, purchase requisitions, orders, receipts and settlement. It also describes choices over who maintains minimum and maximum quantities. The existence of a supplier portal does not resolve those choices. A commercial scope should state the intended responsibilities before the application is configured.

Ask the supplier to show one ordinary replenishment from the stock signal through the authorized order. Identify who may change the quantity, price, delivery date or destination at each stage. A promise to keep stock available is incomplete without an explanation of the authority used to achieve it.

A supplier can manage replenishment while the buyer owns received goods, or the parties can agree a consignment arrangement. SAP's supplier-managed-inventory guidance describes both consigned and non-consigned stock models. The planning responsibility and the ownership arrangement should therefore be documented as separate decisions.

Have the commercial and accounting owners establish the operative ownership and settlement events from the actual agreement. Do not infer them from labels such as vendor managed, supplier stock or free inventory. A supplier replenishing a shelf does not by itself prove that the buyer has no liability until the item is used.

Record who bears the agreed consequences of damage, loss, obsolescence and excess stock. Where the terms differ by item or location, keep those populations distinguishable. A broad headline about reduced working capital can conceal an obligation to purchase unwanted stock when the relationship ends.

The inventory and finance records need to reflect the accepted arrangement. The stock manager should be able to identify physical quantities by owner where necessary, while the payment process should follow the defined commercial event. Neither responsibility disappears because the supplier performs the planning.

Define the item, location and quantity fields shared with the supplier. Separate on-hand stock, unavailable stock, open orders, goods in transit and expected demand where the process uses them. A single stock number may omit an incoming shipment or include units that cannot meet the next requirement.

State how frequently the data updates and how missing or stale information is identified. If yesterday's receipt has not reached the supplier view, the provider may order it again. If a stock count correction is delayed, the supplier can repeatedly plan against inventory that does not exist.

Agree who corrects each source. The supplier may report an implausible balance, but the buyer's warehouse or system owner usually needs to confirm the underlying receipt, issue or count. Letting the supplier overwrite unsupported quantities merely to suppress an exception would weaken the planning record.

Limit access to the information needed for the agreed items and sites. Commercial data about other suppliers or unrelated business units should not enter the feed simply because it is convenient to export the whole inventory file. Preserve the company's existing access and approval process.

Assume a hypothetical agreement uses a planning position equal to usable on-hand units plus approved incoming units due before the relevant need, less committed demand in that window. It triggers a proposal below 100 units and restores the position to a target of 180. These are invented rules, not a general definition of VMI.

If usable stock is 80, an approved incoming order adds 100 and committed demand uses 60, the planning position is 120. Under the stated rule, no new proposal is triggered. Looking only at the 80 physically on hand would overlook the existing order and could create unnecessary stock.

If the incoming order is delayed beyond the need window, it no longer contributes to that example's calculation. The position becomes 20 and the modeled replenishment need is 160 to reach the target. The response still needs a feasible delivery date and the agreement's quantity and spending limits.

Ask the supplier to explain that delayed-order case in its proposed workflow. A calculation that simply adds every open purchase order, regardless of timing, can show adequate supply while leaving the operation short when it needs the item.

Define approved item scope, suppliers, prices, pack sizes, order limits and permitted delivery destinations. State whether a replenishment request requires buyer approval or can become an order automatically within those boundaries. An exception should route to someone with commercial authority rather than disappear into a generic system queue.

Control changes to planning thresholds. A supplier may have useful demand knowledge, but raising the maximum can increase the buyer's stock and spending. Record who proposes, approves and reviews the change. Keep earlier values so the company can explain why orders grew.

Specify treatment of substitutes, minimum purchases and urgent freight. An available substitute may require quality approval, while a minimum order can exceed the target stock position. The supplier should present the consequence and required decision rather than assume replenishment authority includes changing the product or transport cost.

Include a way to suspend new commitments for an affected item without losing visibility of stock already supplied. The company may need to resolve a quality issue or an unexplained quantity before permitting further orders. The provider's service should make that boundary operationally usable.

Agree how the parties identify a stockout, an excess balance and an order created from bad data. Preserve the relevant snapshot and event history. Without that evidence, the supplier can blame the feed while the buyer blames the replenishment rule, with neither able to explain the missed requirement.

Measure results on the eligible item and location population. A high overall service percentage can hide repeated failures on one critical component. Equally, a stockout caused by an unreported customer order should not be attributed automatically to the supplier's planning performance.

Review obsolete and slow stock under the agreed terms. A low stockout rate achieved by continually increasing quantities may create an unacceptable inventory burden. Show service performance alongside stock exposure and the actual ownership or purchase commitment.

Resolve responsibility through the contract and supported facts. A service measure does not automatically create a supplier credit, and a supplier's proposed credit does not settle how inventory should be valued. Keep the operational remedy, commercial agreement and accounting treatment identifiable.

Document how the company regains planning responsibility, receives current settings and obtains the relevant history when the arrangement ends. Identify outstanding replenishment requests, approved orders, in-transit shipments and quantities already held. A portal access cutoff should not leave the buyer unable to explain its remaining obligations.

Agree how unused stock is returned, purchased or otherwise resolved under the actual terms. Retain ownership and quantity evidence until the final disposition is complete. A supplier's final service invoice is not the full exit position if goods and purchase commitments remain open.

Use a trial population that includes normal demand, a delayed receipt, a stock correction and a request above an authority limit. Have the internal owner follow each case from the source data to the resulting commercial decision. The trial should show that the supplier can identify when it needs a buyer decision, not merely produce orders quickly.

The final scope should leave the company able to answer four practical questions: what the supplier may decide, which data it relies on, when a purchase obligation arises and who resolves an exception. Those answers make vendor-managed inventory a reviewable service rather than an undefined transfer of responsibility.