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What Supply & Demand Is For

Supply & Demand is a planning view at Operations > Inventory > Supply & Demand. It helps inventory and purchasing teams decide which stocked products need attention first and what replenishment signals are driving that urgency. You can also find it by searching Supply & Demand in the command palette. Anyone with the inventory view permission can open the screen. It is read-only: nothing on it changes stock, orders, or the ledger.
  • Find products that are out, short, or close to stockout.
  • Review available stock against recent demand.
  • See whether MRP demand is adding pressure.
  • Review suggested reorder quantity.
  • Search by product name or part number.
  • Move into purchasing when replenishment is needed.
Supply and Demand page showing search, sorted by most urgent first badge, and planning table columns for available stock, demand, stockout days, reorder date, safety stock, reorder quantity, surplus, and trend

Supply & Demand starts with the most urgent replenishment rows first.

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Read the Table

  • Product: the stocked product and part number.
  • Available: stock available to promise after commitments.
  • Avg Daily Demand: recent blended daily demand, shown as units per day. It counts the units that actually left the shelf: shipped sales lines, plus units consumed into work orders for products used in builds. A trend chip appears under the rate when recent demand is running above or below the longer-term rate.
  • MRP Demand: additional dependent demand from planning activity, such as components needed by open work orders. The column appears only when at least one loaded product has this kind of demand, so a company with no open work orders never sees an empty column.
  • Days to Stockout: estimated days before available stock runs out.
  • Reorder Date: when replenishment should start to avoid stockout pressure.
  • Safety Stock: unit buffer you want to keep on hand.
  • Reorder Qty: suggested replenishment quantity. Not replenished means the product is excluded from reorder planning: it still sells and ships but is never suggested for restocking.
  • Other Locations: appears when a specific warehouse is selected in the header and shows stock available at other warehouses.
  • Surplus: units above what you need to cover demand through the lead-time window plus safety stock. Positive means spare cover after replenishment needs; negative means short even counting incoming purchase orders. Hover the value for the definition.
  • Trend: a small line chart of the product’s recent demand when enough history exists, and a dash when it does not. It is a picture of the pattern, so it does not sort.
The table is already prioritized Rows are sorted by urgency, and the table says Sorted by most urgent first. Start at the top, then use search when you need a specific product.

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Demand Trend Chips

When recent sales differ from the long-run pattern, a chip appears under Avg Daily Demand. Hover the chip to read how the two rates compare. A product whose demand is steady shows no chip.
  • Accelerating: sales over the last 30 days ran faster than the blended average. The hover text reads like “Demand ran at 0.90/day over the last 30 days, against a blended average of 0.40/day.” The Days to Stockout and Reorder Date use the faster recent rate, so they come sooner, while Reorder Qty is still sized on the blended average.
  • Declining: recent sales are slower than the blended average. The dates and the order quantity keep the blended average, so a short slowdown does not push the order later.
  • No recent sales: nothing sold in the last 30 days. The dates use the blended average of older sales, so an old spike that has aged out is not read as a decline.

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Demand Basis Chips

Some products show a chip under Avg Daily Demand that tells you where the demand comes from. Hover the chip for the full explanation.
  • Sales + builds: demand is the product’s shipped sales plus the units consumed into work orders. Both leave the shelf, so both are counted once each, and the rate is higher than sales history alone.
  • Builds: the product is never sold on its own line. Demand is the units consumed into work orders (assemblies, rebuilds, conversions), so the component still plans and reorders.
  • Consumption: no direct sales and no build draws. Demand comes from internal kit or assembly consumption history, so the component still plans and reorders.
A product with no chip plans from its shipped sales alone.

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Understand Stockout Signals

  • Stockout: N short: the product is already at or below zero on hand.
  • N days in red: under 7 days, urgent stockout risk.
  • N days in amber: under 30 days, review soon and plan replenishment.
  • N days in green: 30 days or more of cover.
  • No demand: Arcus does not have enough demand history to estimate a useful stockout date.
  • Immediate: replenishment should start now because the product is already at or below zero on hand.
  • (overdue): shown after the reorder date, in red, when the suggested reorder date has already passed.
No demand does not mean no importance A no-demand row may still matter if the product is new, seasonal, project-driven, or used as a kit component. Review product context before ignoring it.
Supply and Demand planning table focused on stockout, reorder date, safety stock, reorder quantity, surplus, and trend columns

Use the planning columns together instead of reading any one signal by itself.

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How Reorder Quantity Is Calculated

Reorder Qty is the suggested number of units to buy after considering lead-time demand, safety stock, available stock, and stock already on purchase orders.
  • Lead-time demand: expected demand during the vendor replenishment window.
  • Safety stock: a unit buffer, not a number of days.
  • Available stock: stock currently available after commitments.
  • On purchase order: open purchase supply already on the way.
Do not double-order without checking open POs Reorder Qty already considers stock on purchase order. Before creating a new PO, review open purchase orders and expected receipt dates.

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Use Location Scope Carefully

When the header is set to a specific warehouse, Supply & Demand shows that warehouse’s planning pressure and adds Other Locations when stock exists elsewhere. Use that column before buying.
  • If Other Locations has stock, consider a transfer before creating a vendor PO.
  • If Other Locations is blank or zero, replenishment probably has to come from receiving or purchasing.
  • If the page looks empty under a warehouse filter, switch to all locations before concluding the product has no planning data.
  1. Open Operations > Inventory > Supply & Demand.
  2. Type a product name or part number in Search by product name or part number.
  3. Review the planning columns for that product.
  4. Open the product, Reorder Report, or Purchase Orders when follow-up is needed.

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Choose and Reorder Columns

Use the Columns menu above the table to hide a column, change the column order, or reset to the default layout. Product always stays visible. The table pages through results with a rows-per-page control at the bottom.

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When to Take Action

  • Immediate or overdue reorder date: review vendor supply and create or update a PO.
  • Negative surplus: expected demand and safety stock exceed current supply.
  • High MRP demand: check manufacturing or kit-related demand before buying.
  • Available is zero or negative: check fulfillment pressure and expected receiving.
  • No trend: review product history manually before relying on automation.

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Common Blocks

  • No data appears: the table reads No supply & demand data with “Receive inventory and fulfill orders to generate demand signals.” Receive stock, fulfill orders, or clear the search.
  • “Failed to load supply & demand data.”: the planning data could not load. The reason follows the message. Refresh the page; if it repeats, check that your role has inventory view access.
  • No demand appears: the product may not have enough demand history yet.
  • Reorder Qty is blank: current supply may already cover lead-time demand and safety stock.
  • Reorder Qty says Not replenished: the product is excluded from reorder planning, so Arcus never suggests restocking it.
  • Surplus is negative: review open demand and purchasing supply.
  • Trend is blank: there may not be enough history for a useful sparkline.
  • Rows look stale: refresh after recent receiving, fulfillment, or adjustment work completes.

Inventory Overview

Monitor stock health, location balances, low-stock alerts, and inventory value warnings.

Inventory Transactions

Audit stock movement history, movement types, supply and demand rows, and FIFO layer detail.

Reorder Report

Find low-stock products, review vendor grouping, and generate draft purchase orders from reorder settings.

Create and Manage Purchase Orders

Create POs, add vendor items, receive inventory, and handle approval, cancellation, billing, and close-short blocks.

Product Inventory

Track stock, locations, reorder points, and inventory movement history.

Fulfillment Station

Operate the station view for picking, packing, and shipping.