How To Fix FARR_RAI_CHECK018 - Circular Parent Child relationship for BOM items &1 and &2

SAP Error Message - Details

• Message type: E = Error

• Message class: FARR_RAI_CHECK - Data Consistency Check + RAI messages continuation

• Message number: 018

• Message text: Circular Parent Child relationship for BOM items &1 and &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FARR_RAI_CHECK018 - Circular Parent Child relationship for BOM items &1 and &2 ?

  The SAP error message FARR_RAI_CHECK018 indicates that there is a circular parent-child relationship in the Bill of Materials (BOM) for the specified items. This means that one item is defined as a component of another, and that second item is, in turn, defined as a component of the first item, creating a loop. This situation can lead to infinite recursion and is not allowed in SAP.
  Cause:
  
  Incorrect BOM Configuration: The BOM has been incorrectly configured, leading to a circular reference.
  Data Entry Errors: Manual entry errors during BOM creation or modification can inadvertently create circular relationships.
  System Migration Issues: If data has been migrated from another system, it may not have been validated properly, leading to circular references.
  
  Solution:
  
  
  Identify the Circular Reference:
  
  Use transaction codes like CS03 (Display BOM) to check the BOM structure for the items involved.
  Analyze the BOM hierarchy to find the circular reference.
  
  
  
  Correct the BOM:
  
  Once the circular relationship is identified, you need to modify the BOM to remove the circular reference.
  You can do this by either changing the component assignment or removing the component that creates the loop.
  
  
  
  Validation:
  
  After making changes, validate the BOM to ensure that no circular references exist.
  You can use transaction CS01 (Create BOM) or CS02 (Change BOM) to make the necessary adjustments.
  
  
  
  Testing:
  
  Test the changes in a development or quality environment before applying them to production to ensure that the issue is resolved without introducing new problems.
  
  
  
  Related Information:
  
  BOM Structure: Understanding the structure of BOMs in SAP is crucial. Each item can have multiple components, but they must not reference each other in a circular manner.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on handling BOMs.
  Documentation: Refer to SAP documentation on BOM management for best practices and guidelines on creating and maintaining BOMs.
  
  By following these steps, you should be able to resolve the circular parent-child relationship error in your SAP system.