How To Fix MU061 - You have already maintained a BOM in this transaction

SAP Error Message - Details

• Message type: E = Error

• Message class: MU - Maintenance of structured materials

• Message number: 061

• Message text: You have already maintained a BOM in this transaction

What causes this issue?

You want to create or change a bill of material (BOM) for the material
&V2&. However, you have already created or changed a BOM for the
material &V1& in this transaction. Only one BOM can be processed in a
transaction.

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?

Save your data. Call up the transaction again and then process the BOM
for the material &V2&.

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 MU061 - You have already maintained a BOM in this transaction ?

  The SAP error message MU061 ("You have already maintained a BOM in this transaction") typically occurs when you attempt to create or modify a Bill of Materials (BOM) in a transaction where a BOM already exists for the specified material and plant combination. This error is a safeguard to prevent duplicate entries for the same BOM.
  Cause:
  
  Existing BOM: The primary cause of this error is that a BOM already exists for the material and plant you are trying to maintain.
  Transaction Type: You may be using a transaction that does not allow for the creation of multiple BOMs for the same material and plant.
  Incorrect Data Entry: There may be a mistake in the data you are entering, leading the system to believe that a BOM already exists.
  
  Solution:
  
  
  Check Existing BOM: 
  
  Use transaction code CS03 (Display BOM) to check if a BOM already exists for the material and plant you are working with.
  If a BOM exists, you can either modify it or create a new version if your business process allows for it.
  
  
  
  Use the Correct Transaction: 
  
  If you need to create a new BOM, ensure you are using the correct transaction code (e.g., CS01 for creating a BOM).
  If you need to change an existing BOM, use CS02 instead.
  
  
  
  Versioning: 
  
  If your organization uses BOM versioning, you may need to create a new version of the existing BOM instead of trying to create a new BOM.
  
  
  
  Authorization: 
  
  Ensure you have the necessary authorizations to create or modify BOMs in the system.
  
  
  
  Consult Documentation: 
  
  Review your organization's documentation or SAP help resources for specific guidelines on BOM management.
  
  
  
  Related Information:
  
  BOM Types: Understand the different types of BOMs (e.g., single-level, multi-level) and how they are managed in your SAP system.
  Material Master: Ensure that the material master data is correctly set up, as BOMs are linked to specific materials.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or enhancements related to BOM management.
  Training: If you are new to BOM management in SAP, consider undergoing training or reviewing training materials to better understand the processes involved.
  
  By following these steps, you should be able to resolve the MU061 error and successfully manage your BOMs in SAP.