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Conceptual documentation Representation of a BOM Group in a BOM List  Locate the document in its SAP Library structure

The system stores the bills of material of a BOM group under an internal BOM number.
This happens, for example, when

The system usually creates an object management record for the first BOM in this BOM group. This management record is then valid for all the BOMs in the BOM group.

Example: One Management Record for Multiple BOMs

The following graphic shows that the material BOM for material MAT01 in plant 0001 with usage 1 has a management record. Because of the plant allocations, this BOM is also effective in plant 0002 and plant 0003. The BOM is stored under one internal BOM number. For this reason, the object management record for plant 0001 is also effective for plants 0002 and 0003.

 

This graphic is explained in the accompanying text

 

The object overview of the change master contains only the bill of material that was the first BOM from the BOM group to be entered in the change master. In this example, this is the BOM in plant 0001. However, you can select another BOM in the BOM group, such as the BOM in plant 0002.

If an object management record is for several BOMs in a BOM group, you can display a list of the BOMs that are represented by the management record. To to this, you can use the function: Displaying a BOM LIst.

Situations in Which More Than One Object Management Record is Generated

There are also exceptions, in which more than one management record is generated in the change master record for BOMs of a certain BOM group. In the following situations, a BOM group can have several management records:

Case 1)
In the change master, under the Material BOM object type, you enter a material and BOM data. However, only the material exists and not the BOM. The bills of material in the BOM group will be created after the change master has been saved.
You create a bill of material for the material you entered in a specific plant. You use the Create plant allocation function to allocate this BOM to an additional plant.

Case 2)
In the change master, under the Material BOM object type, you enter two materials and sets of BOM data. However, only the materials exist and not the BOMs. The bills of material in the BOM group will be created after the change master has been saved.
You create a bill of material for one of the materials you entered. Then you use the Create variant of function to create a bill of material for the second material. The variant is a variant of the BOM for the first material.

See also:

Choosing a BOM LIst