How To Fix /PLMI/BO_MBOM018 - Bill of material &1 already exists; delete existing BOM first

SAP Error Message - Details

• Message type: E = Error

• Message class: /PLMI/BO_MBOM -

• Message number: 018

• Message text: Bill of material &1 already exists; delete existing BOM first

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PLMI/BO_MBOM018 - Bill of material &1 already exists; delete existing BOM first ?

  The SAP error message /PLMI/BO_MBOM018 Bill of material &1 already exists; delete existing BOM first indicates that you are trying to create or modify a Bill of Material (BOM) in SAP, but a BOM with the same identifier already exists in the system. This is a common issue when working with BOMs, as each BOM must have a unique identifier.
  Cause:
  
  Duplicate BOM: The most common cause of this error is that a BOM with the same material number and plant already exists in the system.
  Incorrect Data Entry: You may have entered the wrong material number or plant, leading to a conflict with an existing BOM.
  BOM Status: The existing BOM might be in a status that prevents it from being modified or deleted.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing BOM:
  
  Use transaction code CS03 (Display BOM) to check if the BOM with the specified identifier already exists.
  Enter the material number and plant to see the details of the existing BOM.
  
  
  
  Delete Existing BOM:
  
  If you confirm that the existing BOM is no longer needed, you can delete it using transaction code CS02 (Change BOM).
  Enter the material number and plant, and then choose the option to delete the BOM.
  
  
  
  Modify Existing BOM:
  
  If the existing BOM is still relevant but needs changes, you can modify it using transaction code CS02 instead of creating a new one.
  
  
  
  Use a Different Identifier:
  
  If you need to create a new BOM, consider using a different material number or plant to avoid conflicts.
  
  
  
  Check BOM Status:
  
  Ensure that the existing BOM is not locked or in a status that prevents deletion or modification. You may need to consult with your SAP administrator if there are restrictions.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  CS01: Create BOM
  CS02: Change BOM
  CS03: Display BOM
  CS11: Create BOM for a reference object
  CS12: Display BOM for a reference object
  
  
  
  BOM Types: Be aware of the different types of BOMs (e.g., production BOM, sales BOM, etc.) and ensure you are working with the correct type for your needs.
  
  
  Authorization: Ensure you have the necessary authorizations to delete or modify BOMs in the system.
  
  
  Documentation: Refer to SAP documentation or your organization's SAP guidelines for best practices when managing BOMs.
  
  
  By following these steps, you should be able to resolve the error and manage your BOMs effectively in SAP.