BOMs Effectivity

March 1, 2010 by mySAP
Filed under: Production Planning Module

In the standard SAP system, validity areas and periods are used to define the precise conditions under which a bill of material is valid in different areas of a company.

Material BOMs can be valid on different organizational levels:

A material BOM can be used to manage data that applies directly to production. This is why the area of validity is the plant. The plant is the location where all necessary work-scheduling procedures are organized, such as MRP and creating routings.

In this case, BOM can be created with a plant-specific.

However, a group BOM can be created without reference to a plant. For example, a designer maintains a group BOM during the design phase of a product, then the BOM is allocated to one or more plants for production purposes.

If you create a material BOM without reference to a plant, the BOM is valid throughout your company. To do this, you leave the Plant field blank. The SAP system checks whether material masters exist. There are no SAP system checks for plant data.

Plant-Specific Material BOM

If you create a material BOM with reference to a plant, the SAP system makes a number of checks. A material master record with plant data for the relevant plant must exist for the BOM header material. When you enter items, the SAP system checks whether plant data exists for the material components

The checks for creating a material item in a plant-specific BOM

First, the SAP system checks whether the material master record exists. Then the SAP system checks the plant-specific material data. If these checks are successful, the SAP system accepts the material in the material BOM.