The process of identifying, aggregating, and prioritizing, all sources of demand for the integrated supply chain of a product or service at the appropriate level, horizon and interval. The sales forecast is comprised of the following concepts: (1) The sales forecasting level is the focal point in the corporate hierarchy where the forecast is needed at the most generic level, i.e. Corporate forecast, Divisional forecast, Product Line forecast, SKU, SKU by Location. (2) The sales forecasting time horizon generally coincides with the time frame of the plan for which it was developed, i.e. Annual, 1-5 years, 1- 6 months, Daily, Weekly, Monthly. (3) The sales forecasting time interval generally coincides with how often the plan is updated, i.e. Daily, Weekly, Monthly, and Quarterly.