You want to trigger in-house production of a semi-finished material before a sales order for...

In SAP S/4HANA, the goal is to plan in-house production of a semi-finished material using planned independent requirements (PIRs), with those PIRs consumed by dependent requirements from the finished good’s production:

Planning at assembly level (70)(D): Strategy 70 (material master, MRP 3 view, Strategy Group: 70) is designed for subassemblies or semi-finished materials. PIRs are entered for the semi-finished material (MD61), triggering in-house production (planned orders via MRP). When a sales order for the finished good is received, the dependent requirements (from BOM explosion) consume these PIRs within the consumption period (MRP 3 view), aligning production of the semi-finished material with higher-level demand.

Assembly processing with production orders (82)(A) is an MTO strategy tied to sales orders, not PIRs.Planning with final assembly (40)(B) applies to finished goods, where PIRs are consumed by sales orders, not dependent requirements of semi-finished items.Production by lot size (30)(C) focuses on lot-size-based production without consumption logic. Strategy 70 is explicitly designed for this scenario per SAP documentation.