Phantom assemblies in SAP S/4HANA (special procurement type 50, material master MRP 2 viewor BOM item) are virtual components not physically stocked-their BOM is exploded directly into the higher-level assembly. Benefits include:
* To simplify the structure of bills of material(A): By treating a group of components as a phantom (e.g., a kit), the BOM avoids an extra level of assembly, reducing complexity in planning and documentation (e.g., one BOM level instead of two).
* To reduce the number of changes required in bills of material(B): Changes to a phantom's components (CS02) automatically propagate to all higher-level BOMs using it, minimizing maintenance effort compared to updating separate subassembly BOMs.
* To make the assignment of components easier(D): In production orders (CO01), phantom components are directly assigned to the parent operation, simplifying goods issue and confirmation by eliminating subassembly steps.
To reduce the number of material masters(C) is incorrect-phantoms still require a material master with type (e.g., HALB) and procurement key 50, so the count remains unchanged.To increase the number of planning levels(E) is false-phantoms reduce planning levels by bypassing subassembly production. This is per SAP's phantom assembly usage.