ZECH
Solution · Decision support

Forecasts that show their uncertainty, so planners can decide how much to hedge.

Models combine sales history, promotions, prices, seasonality and known events to forecast demand at the level you plan at, with a range rather than a single number — and planners review, adjust and sign off the plan.

The workflow
  1. 01Assemble history and drivers
  2. 02Generate forecasts with ranges
  3. 03Flag unusual items
  4. 04Review and adjust
  5. 05Publish and track accuracy
Who uses it

The workflow

Demand planners, supply and inventory teams, and the category or finance managers who use the forecast to set orders, staffing and budgets.

Today
  • Forecasts live in spreadsheets built by one analyst and updated by hand.
  • Promotions and new products are forecast by gut feel.
  • A single number hides how uncertain the forecast is, so safety stock is set by habit.
  • Planners override forecasts without a record of why, so nobody learns from the overrides.
  1. Assemble history and drivers

    System

    Sales, stock-outs, prices, promotions, calendars and any external signals you choose are cleaned and joined at planning level.

  2. Generate forecasts with ranges

    AI

    Models produce forecasts per item, location and period, each with a likely range and the main drivers behind it.

  3. Flag unusual items

    System

    Items with large changes, low confidence or recent data problems are flagged for planner attention.

  4. Review and adjust

    Person

    Planners review flagged items, apply known information the model lacks, and record a reason for each override.

  5. Publish and track accuracy

    System

    The approved plan is sent to ordering and planning systems, and accuracy of both the model and the overrides is tracked over time.

What to measure

Where people stay in control

Planners own the final plan. They see the forecast range and drivers, can override any number, and each override is recorded with a reason. Accuracy is reported separately for model forecasts and adjusted forecasts, so the team can see where judgment adds value and where it does not.

  • Forecast error by item group and horizon, against the current method
  • Bias, meaning consistent over- or under-forecasting
  • Stock-outs and excess inventory for forecast items
  • Planner time spent per cycle and share of items overridden

Data and integrations

  • At least two years of sales history at the planning level, where available
  • Stock-out and availability records, so lost sales are not read as low demand
  • Promotion, pricing and calendar data
  • ERP or planning system access for publishing the plan

Realistic boundaries

  • Forecasts cannot anticipate events with no precedent in the data; planners add that knowledge.
  • New products and sparse items need proxy methods and wider ranges.
  • Accuracy targets are set from a backtest on your own data, not quoted in advance.

Questions buyers ask

We run a backtest — forecasting past periods using only the data available at the time — and compare error against your current method on the same items and horizons before anything goes live.

Yes, and they should when they know something the model does not. Overrides are logged with a reason and their accuracy is tracked, which helps the team decide where to trust the model. See our predictive modeling service.

Map this workflow with us.

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