The following must already exist for a Safety Stock Journal line to be created for an item/coverage dimensions combination by the Safety Stock Calculation:
- The 'Calculate safety stocks' option must be switched on for the item and either the 'Service level percentage' and/or 'Minimum number of days cover' must be specified for the item, or its forecast item group.
Note that switching the 'Calculate safety stocks' option on or off for a forecast item group changes the same option for all the items in the group, but changing the option for an item changes it for that item only. - An Item coverage record must already exist for the combination.
- Both demand history and final forecasts must exist in past periods for the combination. If lead time forecasts also exist, they are used instead of the final forecasts.
The individual components of a safety stock calculation are displayed on the 'Line details' tab of the Safety Stock Journal line created for the item/coverage dimensions combination.
The Forecast Accuracy section of the User Guide provides further details on how safety stocks are calculated.