How To Fix MU073 - Material &1 listed already; new components must be listed separately

MU073 - Overview

• Message type: E = Error

• Message class: MU - Maintenance of structured materials

• Message number: 073

• Message text: Material &1 listed already; new components must be listed separately

What causes this issue?

You want to create or change a bill of material (BOM) for the
<DS:GLOS.3526BBD7AFAB52B9E10000009B38F974>structured material</> &V1&.
However, the material has already been listed. You have either just
created the <DS:GLOS.3526BBD2AFAB52B9E10000009B38F974>listing
conditions</> in this transaction, or they already existed.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

You can continue since the material is not yet used in purchase orders
or sales orders, and also because there is not yet any stock of the
material.
However, please note that any components that you now additionally
include in the BOM for the structured material will not automatically
be listed as components of the structured material. After saving your
data, you must therefore relist the structured material if you want all
of the components to be listed automatically as components of the
structured material.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MU073 - Material &1 listed already; new components must be listed separately ?

  The SAP error message MU073 indicates that a material (denoted as &1 in the message) is already listed in the system, and any new components or materials must be listed separately. This error typically occurs in the context of creating or modifying a bill of materials (BOM) or when trying to add components to a material that is already part of a BOM.
  
  Cause:
  
  Duplicate Entry: The material you are trying to add is already included in the BOM or the list of components for the specified material.
  Incorrect BOM Structure: The system expects each component to be listed separately, and the current entry violates this requirement.
  
  Configuration Issues: There may be configuration settings in the BOM or material master that enforce unique entries for components.
  
  
  Solution:
  
  Check Existing BOM: Review the existing BOM for the material in question to confirm if the component is already listed. You can do this using transaction code CS03 (Display