In Material Master Screen,functionally what is BAckward Consumption period

In Material Master Screen,functionally what is BAckward Consumption period & Forward Consumption period in the MRP Screen.Pls explain its functionality

Hi,
The safety time / actual range of coverage ensures that the planned warehouse stock covers the requirements of a defined number of days. It therefore serves as a time float and thus works alongside the safety stock, which acts as quantity float.
The system simulates bringing the requirements forward by the specified number of days and the planning for the receipts, created for these requirements in the planning run, is also brought forward by this number of days.
Prerequisites
·   You have set the Safety Time indicator in the material master record (MRP 2 View) to define whether the safety time is only to apply to independent requirements or to all requirements.
·    In the material master record (MRP 2 View), in the Safety Time/Actual Range of Coverage field, you have entered the number of workdays by which the requirements are to be brought forward.
·    If, in addition to this actual range of coverage, you also want to define a different number of workdays in certain periods or a safety time less than one day then, in Customizing for MRP in the activity Define Period Profile for Safety Time/Actual Range of Coverage you can define a period profile and assign it to the material in the material master record.
Regards,
Vijay

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