| # Top-down item selection In 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 ERP LN includes in the selected range because of the bottom-up item selection, ERP LN extends the item selection with the following: Components in the bill of material. Supplying items you specified in the Supplying Relationships (cprpd7130m000) session. Components in the generic bill of material, for the generic items included in the specified item range. Derived-from items; the generic or normal items you use to create project items in the Project Control (PCS) module of Manufacturing, of any project items included in the specified item range. 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. Recommendation: If you run the Generate Order Planning (cprrp1210m000) session for all items, clear the Use Top-Down Item Selection check box. Performance aspects Effect on CPU: Yes Effect on database growth: Not applicable Related topics RRP run, item selection |