Businesses using a common stock pool for satisfying demand with different priorities often face the issue that a lower priority demand is received and consumes stock and then a higher priority demand is received later Which cannot be covered.

You can use the stock protection feature in supply and demand matching processes (for example, the availability check) to protect stock for higher priority demand even though such a demand has not yet been received. You can use the default implementation SEG_IM_ATP_ADJUST_CHECK_DATA available with the BAdI BADI_ATP_ADJUST_CHECK_DATA to protect the stock for higher priority demand.

The default implementation uses the segmentation value and the priority sequence (maintained in Customizing for  Logistics – General Segmentation Define Segmentation Strategies ) to protect the demand of higher priority requirement segment. During the availability check, the system uses the default implementation.