Hello all together,

after a unsuccessful search in the web, I found this site and hopefully somebody can help?

I have seen in the SAP library for SCM safety stock calculation on the page below, that the target service sevel will be adjusted by (lot size divided by standard deviation of demand during lead time) to get an effective service level. I do not understand about the purpose of this and I did not find any explanation in a book or in the web. Is there somebody who knows a book I can read about this step or maybe give me a hint?

HTML Code:
https://help.sap.com/saphelp_SCM700_ehp02/helpdata/en/85/2bc95360267614e10000000a174cb4/frameset.htm
Thank you very much
Indigo