WAPE for business reviews

Forecasting is a structured estimate for a defined decision, horizon and level of detail. This guide introduces wape for business reviews and shows where it fits in a practical planning cycle.

Practitioner lens

Before applying wape for business reviews, state the unit, time bucket, planning level and horizon. Forecasts with different definitions are not comparable, even when their charts look similar.

First experiment

Draw the series before fitting a model; mark missing periods, stockouts, promotions and calendar changes.

This is an original educational brief. It is a starting point for discussion, not a claim that one technique fits every supply chain.