Which master data fields can have an impact on whether MRP creates planned orders or...

The master data fields that can have an impact on whether MRP creates planned orders or purchase requisitions for a material are:

MRP type: The MRP type is a parameter that defines how a material is planned by MRP. Depending on the MRP type, MRP can create different types of procurement proposals for a material. For example, if the MRP type is PD (MRP), MRP can create either planned orders or purchase requisitions, depending on the procurement type of the material. If the MRP type is VB (Reorder Point Planning), MRP can only create purchase requisitions, regardless of the procurement type of the material.

Procurement type: The procurement type is a parameter that defines how a material is procured, either internally or externally. Depending on the procurement type, MRP can create different types of procurement proposals for a material. For example, if the procurement type is E (External Procurement), MRP can only create purchase requisitions for a material. If the procurement type is X (Both Procurement Types Possible), MRP can create either planned orders or purchase requisitions, depending on the source of supply determination.

The master data fields that do not have an impact on whether MRP creates planned orders or purchase requisitions for a material are:

MRP groups: The MRP groups are parameters that allow you to group materials with similar planning characteristics and assign them common MRP settings, such as planning horizon, lot-sizing procedure, or planning calendar. The MRP groups do not directly affect the type of procurement proposals created by MRP, but they can influence the quantity and timing of the requirements and receipts.

Material type: The material type is a parameter that defines the attributes and properties of a material, such as valuation class, price control, or account determination. The material type does not affect the type of procurement proposals created by MRP, but it can influence the valuation and accounting of the material movements.

References: [SAP S/4HANA Production Planning and Manufacturing Certification Guide], page 87; [SAP Help Portal: MRP Type] and [SAP Help Portal: Procurement Type].