How To Fix MH229 - The sales unit cannot be changed since the material is used in BOMs

SAP Error Message - Details

• Message type: E = Error

• Message class: MH - Maintain Material Master Data (Retail)

• Message number: 229

• Message text: The sales unit cannot be changed since the material is used in BOMs

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MH229 - The sales unit cannot be changed since the material is used in BOMs ?

  The SAP error message MH229 indicates that you are trying to change the sales unit of a material that is currently being used in Bill of Materials (BOMs). This restriction is in place because changing the sales unit could lead to inconsistencies in the BOMs where the material is referenced.
  Cause:
  The primary cause of this error is that the material you are attempting to modify has been defined in one or more BOMs. Since BOMs are used to define the components required for production, changing the sales unit could affect how these components are managed and calculated.
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check BOM Usage: Identify all BOMs that include the material in question. You can do this by using transaction codes like CS03 (Display BOM) or CS11 (BOMs for a Material).
  
  
  Remove Material from BOMs: If the material is not needed in the BOMs, you can remove it from the relevant BOMs using transaction CS02 (Change BOM). Make sure to do this carefully, as it may affect production processes.
  
  
  Change Sales Unit: Once the material is no longer referenced in any BOMs, you can proceed to change the sales unit using transaction MM02 (Change Material).
  
  
  Recreate BOMs: If the material is still needed in BOMs but you need to change the sales unit, you may need to recreate the BOMs with the new sales unit after making the change.
  
  
  Consult with Stakeholders: Before making changes, it’s advisable to consult with relevant stakeholders (e.g., production, planning, and sales teams) to ensure that the changes will not disrupt operations.
  
  
  Related Information:
  
  
  Transaction Codes:
  
  CS03: Display BOM
  CS02: Change BOM
  MM02: Change Material
  CS11: BOMs for a Material
  
  
  
  BOM Structure: Understanding the structure of BOMs and how materials are used within them is crucial for managing changes effectively.
  
  
  Material Master Data: Familiarize yourself with the material master data and its various views, especially the sales and distribution view, to understand how changes might impact other areas.
  
  
  Documentation: Always document any changes made to BOMs and material master data for future reference and compliance.
  
  
  By following these steps, you should be able to resolve the MH229 error and successfully change the sales unit of the material.