Automatic Safety stock calculation in R3
I am using consumption based planning in R3.
In material master,
I have used the MRP type 'VM' ( Automatic re-order planning)
Service Level = 99.5%
Planned deliv time = 2 days
Forecasting View -
historical periods = 60
forecast periods = 12
After executing the forecast, I get the following automatically calculated values of -
MAD = 447
Safety stock = 399
I want to understand , how this value of 399 has been arrived.
The formula provided in the SAP help is
SS = R * sqrt(w) * MAD
SS = R * w * MAD
But using any of these formulaes, I am unable to come to the value of 399.
Awaiting ur inputs on this,
Niranjan P. Adkar