How To Fix 29005 - BOM already exists for this material/plant/usage

SAP Error Message - Details

• Message type: E = Error

• Message class: 29 - Bills of Material

• Message number: 005

• Message text: BOM already exists for this material/plant/usage

What causes this issue?

You want to create a variant of an existing BOM using the material you
have entered (-> Variant BOM).

System Response

The system checks whether:
RESET N1
Variant BOMs are supported (in Customizing, under
<DS:SIMG.SIMG_CFMENUOLPSOS27>Define modification parameters</>
There is already a BOM for the material
You can only create a variant BOM for a material that does <ZH>not</>
yet have a BOM.

How to fix this error?

Check your entries for the material, plant and usage.
See 1.
If maintenance of variant BOMs is set to inactive, contact your system
administrator. The setting may need to be changed.
See 2.
If a BOM already exists for the material you entered in the plant and
with the usage you entered, you can only create a variant for a
different material.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 29005 - BOM already exists for this material/plant/usage ?

  The SAP error message 29005, which states "BOM already exists for this material/plant/usage," typically occurs when you attempt to create a Bill of Materials (BOM) for a material that already has an existing BOM for the specified plant and usage. This is a common issue in SAP when managing BOMs, and it can arise in various scenarios, such as during the creation of a new BOM or when trying to modify an existing one.
  Cause:
  
  Existing BOM: The primary cause of this error is that there is already a BOM defined for the same material, plant, and usage combination in the system.
  Incorrect Data Entry: Sometimes, the error can occur due to incorrect data entry, such as specifying the wrong plant or usage type.
  Multiple BOMs: If there are multiple BOMs for the same material and plant but with different usages, the system may still prevent the creation of a new BOM if the usage is not specified correctly.
  
  Solution:
  
  
  Check Existing BOMs: 
  
  Use transaction code CS03 (Display BOM) to check if a BOM already exists for the specified material, plant, and usage. 
  If a BOM exists, you can either modify it or create a new version of it if necessary.
  
  
  
  Use Different Usage: 
  
  If you need to create a new BOM, consider using a different usage type if applicable. Each usage type can have its own BOM.
  
  
  
  Delete or Change Existing BOM: 
  
  If the existing BOM is no longer needed, you can delete it using transaction code CS02 (Change BOM) or CS01 (Create BOM) to make necessary adjustments.
  
  
  
  Check for Errors in Data Entry: 
  
  Ensure that you are entering the correct material number, plant, and usage type. Double-check for typos or incorrect entries.
  
  
  
  Consult Documentation: 
  
  Review the SAP documentation or your organization's BOM management guidelines to ensure compliance with the required processes.
  
  
  
  Related Information:
  
  BOM Usage Types: Understand the different usage types in SAP BOMs (e.g., production, engineering, etc.) and how they affect BOM creation.
  BOM Status: Check the status of the existing BOM. If it is marked as inactive or obsolete, you may need to address that before creating a new BOM.
  Authorization Issues: Ensure that you have the necessary authorizations to create or modify BOMs in the system.
  
  By following these steps, you should be able to resolve the error message 29005 and successfully manage your BOMs in SAP.