Single-Level BOMs and Assemblies
A single-level BOM displays the assembly or sub-assembly with only one level of children. Thus it displays the components directly needed to make the assembly or sub-assembly.
You can break down large and complex product structures into a number of related units. Each unit can be represented by a BOM, referred to in this documentation as a single-level BOM.
A single-level BOM describes one or more assemblies by means of component quantities. In the following, the term single-level BOM will be shortened to BOM.
In practice, a single-level BOM is often a collection of standardized assemblies. A single-level BOM can be either a complete machine or an individual part.
Single-level BOMs can be used to define one-time solutions for recurring tasks. Once you have defined your solution in the form of a single level BOM, it can be used whenever you need it and combine it with other BOMs as required.
Assemblies
Assembly is a group of semi-finished products or parts that are assembled together and form either a finished product or a component of a finished product.
An assembly is identified by a material number and generally functions as a single unit.
The term “assembly” comes from material BOM applications. In document structures (in document management applications) this term refers to a coherent grouping of a quantity of documents and texts.
Phantom Assemblies
A phantom assembly is a logical (rather than functional) grouping of materials.
- From the design point of view, these materials are grouped together to form an assembly. The components of a phantom assembly are grouped together to be built into the assembly on the next level up the product structure.
- From the production point of view, these materials are not actually assembled to form a physical unit.
the special procurement key phantom assembly can be defined in the material requirements planning (MRP) data of the material master record for a material.
Dependent requirements for the superior assembly are passed directly down to the components of the phantom assembly, skipping the phantom assembly. Planned orders and purchase requisitions are also produced only for the components of the phantom assembly.
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SAP PP : BOM Usage | SAP Business , SAP Tutorial , SAP Help on
Tue, 2nd Mar 2010 10:25 pm
[...] BOM structure for all areas of their company. This structure usually takes the form of complete single-level BOMs, created in the design department, and used in both material management and the assembly [...]
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