SAP UDF (Unified Demand Forecast) is the statistical forecasting engine
inside SAP Customer Activity Repository. It produces a single demand plan that every
consuming retail application can rely on — no more one forecast per system.
UDF builds that plan from Demand Influencing Factors: price, promotions,
seasonality, weather, holidays, cannibalisation between articles. It handles the cases
that break simpler forecasting tools — prepacks, sets, generic-variant articles
and dependencies between sites — which is why it fits retail and fashion rather
than generic supply chain.
Its output feeds SAP Replenishment Planning for stores and
SAP Predictive Replenishment for distribution centres, and it is the
forecast behind SAP Promotion Management and SAP Assortment Planning.