You define the minimum, maximum and target range of coverage for particular periods in the range of coverage profile. The system calculates the minimum, maximum and target range of coverage using the defined range of coverage values and the average daily requirements. If the available quantity is below the minimum stock level, the system creates a procurement proposal so that stock can be replenished up to the target stock level. The system thus obtains a dynamic safety stock based on requirements

You define the safety time/actual range of coverage in the material master as a planned number of days in which the warehouse stock of a material covers requirements without new receipts being taken into account.

The system simulates bringing forward the existing requirements on the time axis by the number of days defined and creates procurement proposals correspondingly. This ensures that the stock of a material is received before the actual requirements date. This enables the warehouse stock to cover requirements even with fluctuations.

The days’ supply and receipt days’ supply indicate how many days the plant stock currently available (in the case of the receipt days’ supply, plant stock plus certain receipts) will be able to cover the existing requirements.

Both types of days’ supply are calculated by the system during the planning run and are displayed in MRP Evaluations.

The actual range of coverage specifies how long the available quantity of a material at a particular date or in a particular period can cover the requirements in subsequent periods. This is specified in number of days.

The system calculates the actual range of coverage during the planning run and displays it in the period totals display in MRP Evaluations and in the planning table for repetitive manufacturing.