Requirement Calculation
You use the requirement calculation in SAP F&R to determine the future requirement expected for a location product. This means you can ensure product availability while at the same time keeping stock levels low.
Requirement calculation takes manually entered and activated planning data into account, therefore replacing the calculated forecast values. For more information, see planning data.
Prerequisites
You have already configured the settings for the F&R Processor in Administration.
The future consumption values calculated during the forecast form the basis of the requirement calculation.
Process
In Scheduling, SAP F&R determines the possible order dates for each location product. The future demand periods are calculated using the supply network, the procurement cycles, the replenishment lead time, and the different calendars. In this process step, SAP F&R determines the order dates, delivery dates, and availability dates within the defined optimization horizon (how many demand periods in the future will be considered).
SAP F&R distributes the future consumption values from the forecast amongst the different demand periods, thus determining the future requirement. You can take several demand periods in the future into consideration. SAP F&R uses this option as the basis for requirement quantity optimization (RQO), which takes place at a later stage.
Based on the future requirement, SAP F&R can calculate the dynamic minimum stock. If the current stock falls below the dynamic minimum stock (reorder point), SAP F&R includes the location product automatically in the requirement calculation.
The calculated net requirement for a demand period is made up of the following:
Dynamic target stock
Current actual stock
Open goods movements (receipts and issues)
Depending on the replenishment type (RP type), SAP F&R can execute the requirements calculation with a manual target stock or manual minimum stock and a reorder point. You define the reorder point in the master data for the location product.
ExampleIn the master data you have set RP type 09 (manual target stock and manual reorder point) and the reorder point as 10 pieces. If the level of stock falls below the reorder point of 10 pieces, SAP F&R includes the location product in the requirement calculation.
End of the example.