Safety Stock Split 
Safety stock is the quantity of stock to satisfy high requirements in the stocking-up period. The purpose of the safety stock is to prevent material shortage. During MRP, if the materials with segmentation are planned, the system splits the safety stock equally across different requirement segments.
Prerequisites
You have assigned and fixed a segmentation strategy (with scope = Requirement and Stock Segments Maintained) for your material
You have activated the business function Material Segmentation across Logistics (LOG_SEGMENTATION)
Features
During MRP, the system splits the safety stock based on the valid segment combinations you maintain in the segmentation strategy. If you do not maintain segment combinations, the system proposes the value BLANK as the valid segment value for the entire safety stock.
Example
You have the material Shirt_Mens with a safety stock of 60 pieces. The valid segment combinations X, Y, and Z are maintained in the segmentation strategy that is assigned to the material.
For the mapping rule 1:1, the segmentation strategy with scope = Requirements and Stock Segments Maintained is as follows:
Requirement Segment | Stock Segment |
|---|---|
X | X |
Y | Y |
Z | Z |
During MRP, the system splits the safety stock between segments X, Y, and Z. As a result, the system proposes new purchase requisitions for all segments X, Y, and Z.
Safety stock split and individual purchase requisitions
For the mapping rule N:1, the segmentation strategy with scope = Requirements and Stock Segments Maintained is as follows:
Requirement Segment | Stock Segment |
|---|---|
X | Common |
Y | Common |
Z | Common |
During MRP, the system splits the safety stock between segments X, Y, and Z. However, based on the mapping rule, any requirement segment is covered by the common stock. As a result, the system proposes one new purchase requisition for the common stock.
Safety stock split and single purchase requisition