In SAS^® Pack Optimization, a purchase order plan might fail, and errors similar to the following occur in the log:

ERROR: Pack Optimization has violated a constraint.  Output includes 0 of SKU XXXXXXXXXXX at store XXXXXX when the SKU-Store ORDER_MIN was 1 in delivery XXXXXXX.

This error might occur when both of the following conditions are met:

• There are enough units to satisfy the need for a delivery.
• In addition to prepacks, bulk packs are allowed in optimization in the delivery.