How To Fix MPE_CM_BOM038 - Header BOM has been duplicated within child BOM

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_CM_BOM - Message Class for Parameter Effectivity

• Message number: 038

• Message text: Header BOM has been duplicated within child BOM

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPE_CM_BOM038 - Header BOM has been duplicated within child BOM ?

  The SAP error message MPE_CM_BOM038, which states "Header BOM has been duplicated within child BOM," typically occurs in the context of Bill of Materials (BOM) management. This error indicates that there is a duplication of the header BOM within its own child BOM structure, which is not allowed in SAP.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that the same BOM is being referenced multiple times within its own child BOM structure. This can happen if the BOM is incorrectly configured or if there are mistakes in the BOM hierarchy.
  Incorrect BOM Configuration: If the BOM is set up incorrectly, such as having the same component or sub-BOM listed more than once, it can lead to this error.
  Data Migration Issues: If data has been migrated from another system or if there have been manual entries that were not validated, it can lead to duplicates.
  
  Solution:
  
  Check BOM Structure: Review the BOM structure in the SAP system. Look for any instances where the header BOM is referenced as a child BOM. Ensure that each child BOM is unique and does not reference the header BOM itself.
  Remove Duplicates: If duplicates are found, remove the unnecessary references or correct the BOM structure to ensure that the header BOM is not included as a child.
  Validate BOM Configuration: Ensure that the BOM is configured correctly according to the business requirements. This may involve consulting with a BOM expert or reviewing the documentation for BOM setup.
  Use Transaction Codes: Utilize transaction codes such as CS03 (Display BOM) or CS02 (Change BOM) to analyze and modify the BOM as needed.
  Check for Data Integrity: If the issue arose from data migration, consider running data integrity checks or using tools to clean up the BOM data.
  
  Related Information:
  
  BOM Types: Understand the different types of BOMs in SAP (e.g., single-level, multi-level, variant BOMs) and how they should be structured.
  SAP Documentation: Refer to SAP Help documentation for detailed guidelines on BOM management and best practices.
  User Forums and SAP Notes: Check SAP Community forums or SAP Notes for similar issues and solutions provided by other users or SAP support.
  Testing Changes: After making changes to the BOM, conduct thorough testing to ensure that the changes do not affect other areas of the system.
  
  By following these steps, you should be able to resolve the MPE_CM_BOM038 error and ensure that your BOM structure is correctly configured.