SLLC Intermediate key terms
SLLC Intermediate · Get comfortable with the vocabulary.
- Postponement
- Related: Assemble-to-Order, Bullwhip Effect, Safety Stock
Delaying final assembly or customization of a product until a customer order or regional demand is known, so generic inventory serves many variants and forecast risk falls.
- Bullwhip Effect
- Related: Demand Sensing, Postponement, Vendor-Managed Inventory
The tendency for order variability to grow as it moves upstream from end customers to suppliers, driven by batching, price promotions, rationing and distorted information sharing.
- Demand Sensing
- Related: Bullwhip Effect, Forecast Accuracy, Consensus Forecast
Using short-horizon, high-frequency signals such as point-of-sale data, orders and promotions to detect shifts in demand faster than periodic statistical forecasting allows.
- Mean Absolute Percentage Error (MAPE)
- Related: Forecast Bias, Forecast Accuracy
A forecast accuracy measure averaging the absolute error divided by actual demand, expressed as a percentage; undefined when actual demand is zero and biased toward under-forecasts.
- Forecast Bias
- Related: Mean Absolute Percentage Error (MAPE), Consensus Forecast
The systematic tendency of forecasts to run consistently above or below actual demand over time, measured as average signed error rather than average absolute error.
- Consensus Forecast
- Related: Sales and Operations Planning (S&OP), Forecast Bias, Demand Sensing
A single demand plan agreed across sales, marketing, finance and operations, replacing competing departmental numbers so that one set of figures drives planning.
- Sales and Operations Planning (S&OP)
- Related: Consensus Forecast, Capacity Planning, Safety Stock
A recurring cross-functional process that balances demand plans against supply capabilities over a rolling horizon, ending in an agreed plan and reconciled financial view.
- Assemble-to-Order
- Related: Postponement, Make-to-Order, Safety Stock
A production approach where standard components are stocked and final configuration occurs only after a customer order arrives, shortening lead time while limiting finished-goods variety.
- Make-to-Order
- Related: Assemble-to-Order, Capacity Planning, Order Cycle Time
A production strategy in which manufacturing starts only after a confirmed customer order, so lead time includes production and finished-goods inventory is minimal.
- Capacity Planning
- Related: Sales and Operations Planning (S&OP), Rough-Cut Capacity Planning
Comparing available labor, machine and supplier capacity against forecast or planned workload to identify shortfalls and decide on overtime, outsourcing or demand shaping.
- Rough-Cut Capacity Planning
- Related: Capacity Planning, Material Requirements Planning (MRP)
A medium-term check that converts the master production schedule into load on key bottleneck resources, flagging infeasible plans before detailed scheduling begins.
- Material Requirements Planning (MRP)
- Related: Bill of Materials, Safety Stock, Rough-Cut Capacity Planning
A calculation that explodes a master production schedule through the bill of materials, netting on-hand and scheduled receipts to generate time-phased component and raw-material requirements.
- Bill of Materials
- Related: Material Requirements Planning (MRP), Cycle Counting
A structured list of all components, quantities and parent-child relationships needed to build one unit of a finished product, used for costing, picking and MRP explosions.
- Safety Stock
- Related: Reorder Point, Service Level, Postponement
Buffer inventory held to absorb demand variability and supply lead-time uncertainty, sized so that a chosen service level is met at acceptable holding cost.
- Reorder Point
- Related: Safety Stock, Economic Order Quantity (EOQ), Cycle Counting
The inventory position at which a replenishment order is triggered, typically average demand during lead time plus safety stock for a continuous-review policy.
- Economic Order Quantity (EOQ)
- Related: Reorder Point, Inventory Turnover
The order size that minimizes the sum of ordering and holding costs under stable demand and known costs, ignoring quantity discounts and variability.
- Cycle Counting
- Related: Bill of Materials, Reorder Point, Cross-Docking
Counting a rotating subset of inventory items on a scheduled basis instead of a full annual physical count, allowing root-cause correction of recurring discrepancies.
- Cross-Docking
- Related: Cycle Counting, Slotting, Last-Mile Delivery
Receiving goods and shipping them onward with little or no storage, using staged dock flow and pre-planned outbound loads to cut handling and inventory dwell time.
- Slotting
- Related: Cross-Docking, Stock-Keeping Unit (SKU)
Assigning stock-keeping units to warehouse storage locations based on velocity, cube, weight and affinity so that picking travel and handling effort are minimized.
- Stock-Keeping Unit (SKU)
- Related: Slotting, Inventory Turnover
The lowest level at which inventory is uniquely identified and tracked, distinguished by attributes such as product, size, color or packaging configuration.
- Inventory Turnover
- Related: Economic Order Quantity (EOQ), Stock-Keeping Unit (SKU), Safety Stock
Cost of goods sold divided by average inventory value over a period, indicating how many times stock is replaced and how efficiently capital is used.
- Total Cost of Ownership
- Related: Landed Cost, Supplier Scorecard, Single Sourcing
A procurement view that adds purchase price to freight, duties, quality failures, inventory carrying cost and lifecycle expenses to compare suppliers on full economic cost.
- Landed Cost
- Related: Total Cost of Ownership, Incoterms, Landed Cost
The delivered cost of goods including purchase price, freight, insurance, duties, tariffs and handling, used to value inventory and evaluate sourcing options.
- Incoterms
- Related: Landed Cost, Free on Board (FOB)
Standard international trade rules defining which party arranges and pays for carriage, insurance, export clearance and import duties at named points in the shipment.
- Free on Board (FOB)
- Related: Incoterms, Landed Cost
An Incoterm under which the seller delivers goods on board the vessel at the named port, after which risk and main carriage cost pass to the buyer.
- Supplier Scorecard
- Related: Total Cost of Ownership, Single Sourcing, Supplier Relationship Management
A periodic rating of suppliers against agreed metrics such as quality, delivery reliability, cost and responsiveness, used to drive improvement and sourcing decisions.
- Single Sourcing
- Related: Supplier Scorecard, Dual Sourcing, Supply Chain Risk
Awarding all volume for an item to one supplier, gaining leverage and simplicity but concentrating supply risk if that source fails.
- Dual Sourcing
- Related: Single Sourcing, Supply Chain Risk
Deliberately splitting volume between two qualified suppliers to maintain competitive tension and continuity of supply if one source is disrupted.
- Supplier Relationship Management
- Related: Supplier Scorecard, Single Sourcing
The structured practice of segmenting suppliers, setting joint goals and reviewing performance so that strategic partners deliver innovation, quality and reliability over time.
- Vendor-Managed Inventory
- Related: Bullwhip Effect, Consignment Stock, Reorder Point
An arrangement where the supplier monitors the buyer's stock and usage data and decides replenishment quantities and timing within agreed service and inventory limits.
- Consignment Stock
- Related: Vendor-Managed Inventory, Safety Stock
Inventory held at the buyer's site but owned by the supplier until consumed or sold, shifting carrying cost and obsolescence risk to the supplier.
- Service Level
- Related: Safety Stock, Perfect Order Rate, Order Cycle Time
The target probability of filling demand from stock during a replenishment cycle, used to size safety stock and balance availability against holding cost.
- Perfect Order Rate
- Related: Service Level, Order Cycle Time
The percentage of orders delivered complete, on time, undamaged and with correct documentation, a composite measure of end-to-end order execution quality.
- Order Cycle Time
- Related: Perfect Order Rate, Last-Mile Delivery, Make-to-Order
The elapsed time from customer order receipt to delivery, spanning order processing, picking, packing and transport, and a key driver of customer-perceived responsiveness.
- Last-Mile Delivery
- Related: Cross-Docking, Order Cycle Time
The final leg of a shipment from a local hub to the end recipient, typically the costliest per unit and most visible to the customer.
- Milk Run
- Related: Landed Cost, Last-Mile Delivery
A fixed route in which one vehicle collects goods from several suppliers or delivers to several customers in a planned sequence, improving vehicle utilization.
- Control Tower
- Related: Supply Chain Visibility, Blockchain Provenance
A centralized team and analytics capability that aggregates supply chain data to give end-to-end visibility, exception alerts and coordinated response across partners.
- Supply Chain Visibility
- Related: Control Tower, Demand Sensing
The ability to track inventory, shipments and orders across partners in near real time, enabling earlier exception detection and more reliable customer promises.
- Blockchain Provenance
- Related: Control Tower, Supply Chain Visibility
A shared, tamper-evident ledger recording custody and handling events so that origin, certifications and chain of custody can be verified across multiple parties.
- Supply Chain Risk
- Related: Dual Sourcing, Resilience, Scope 3 Emissions
The likelihood and impact of disruptions from supplier failure, natural events, geopolitics or demand shocks that interrupt flow and erode service or margin.
- Resilience
- Related: Supply Chain Risk, Dual Sourcing
The capacity of a supply chain to absorb disruption, maintain critical flows and recover quickly, built through redundancy, flexibility and tested contingency plans.
- Scope 3 Emissions
- Related: Supply Chain Risk, Blockchain Provenance
Indirect greenhouse gas emissions arising across a company's value chain, including purchased goods, upstream transport and product use, typically the largest share of footprint.