Top-down item selectionIn the Generate Order Planning (cprrp1210m000) session, if you select the Use Top-Down Item Selection check box, Enterprise Planning extends the item selection and takes into account the multi-level structure of the bill of material (BOM), supplying relationships, and the relations between generic items and the possible product variants. For the range of plan items you specified in the From Plan Item and To Plan Item fields, or for any item that LN includes in the selected range because of the bottom-up item selection, LN extends the item selection with the following:
If you perform order planning for a single plan item, the Use Top-Down Item Selection check box offers a useful option. However, if you perform order planning for all plan items (the full range), the setting of the Use Top-Down Item Selection check box makes no difference for the end result. In that case, selecting the Use Top-Down Item Selection check box only slows down the planning run. Performance aspects
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