How To Fix /ACCGO/MCK_MAINT821 - BOM header material &1 found as ingredient at multilevel

SAP Error Message - Details

• Message type: E = Error

• Message class: /ACCGO/MCK_MAINT -

• Message number: 821

• Message text: BOM header material &1 found as ingredient at multilevel

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ACCGO/MCK_MAINT821 - BOM header material &1 found as ingredient at multilevel ?

  The SAP error message /ACCGO/MCK_MAINT821 indicates that there is a problem with the Bill of Materials (BOM) in the context of multilevel BOMs. Specifically, the error states that the BOM header material (denoted as &1) is found as an ingredient in a multilevel BOM structure. This situation typically arises when there is a circular reference or a conflict in the BOM hierarchy.
  Cause:
  
  Circular Reference: The BOM header material is being referenced as a component in its own BOM or in a BOM of another material, creating a loop.
  Incorrect BOM Structure: The BOM may have been incorrectly defined, leading to a situation where a material is both a parent and a child in the BOM hierarchy.
  Data Integrity Issues: There may be inconsistencies or errors in the BOM data that need to be resolved.
  
  Solution:
  
  Review BOM Structure: Check the BOM for the material specified in the error message. Ensure that it is not listed as a component of itself or in a way that creates a circular reference.
  Correct BOM Entries: If you find that the BOM is incorrectly structured, modify the BOM to remove the circular reference. This may involve changing the component materials or restructuring the BOM.
  Use Transaction Codes: Utilize transaction codes like CS02 (Change BOM) or CS03 (Display BOM) to review and edit the BOM as necessary.
  Check for Dependencies: If the BOM is part of a larger assembly, ensure that other BOMs do not reference the same material in a conflicting manner.
  Data Consistency Check: Run consistency checks on the BOM data to identify and rectify any discrepancies.
  
  Related Information:
  
  BOM Types: Understand the different types of BOMs (e.g., single-level, multilevel) and how they are structured in SAP.
  SAP Documentation: Refer to SAP Help documentation for detailed information on BOM management and error handling.
  Transaction Codes: Familiarize yourself with relevant transaction codes for BOM management, such as:
  
  CS01 - Create BOM
  CS02 - Change BOM
  CS03 - Display BOM
  CS12 - Multilevel BOM
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to BOM management that may address this error.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.