How To Fix PHIN421 - No superior object; BOM item cannot be removed

SAP Error Message - Details

• Message type: E = Error

• Message class: PHIN - Phase In: Messages

• Message number: 421

• Message text: No superior object; BOM item cannot be removed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message PHIN421 - No superior object; BOM item cannot be removed ?

  The SAP error message PHIN421 "No superior object; BOM item cannot be removed" typically occurs when you are trying to delete or remove a Bill of Materials (BOM) item that is linked to a superior object (like a parent assembly) that does not exist or is not properly defined in the system. This can happen in various scenarios, such as when the BOM item is part of a multi-level BOM structure.
  Cause:
  
  Missing Superior Object: The superior object (parent assembly) that the BOM item is associated with does not exist in the system or has been deleted.
  Incorrect BOM Structure: The BOM item may not be correctly linked to its superior object, leading to inconsistencies in the BOM structure.
  Data Integrity Issues: There may be data integrity issues in the BOM records, causing the system to not recognize the relationship between the BOM item and its superior object.
  
  Solution:
  
  Check Superior Object: Verify that the superior object (parent assembly) exists in the system. You can do this by checking the BOM for the parent assembly to ensure it is correctly defined.
  Review BOM Structure: Use transaction codes like CS03 (Display BOM) to review the BOM structure and ensure that the relationships between items are correctly established.
  Recreate BOM: If the superior object is missing or the BOM structure is incorrect, you may need to recreate the BOM or add the missing superior object.
  Check for Deletions: Ensure that the superior object has not been deleted or marked for deletion in the system. If it has, you may need to restore it or create a new one.
  Consult Documentation: Refer to SAP documentation or help resources for specific instructions on handling BOMs and resolving related errors.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CS01 (Create BOM), CS02 (Change BOM), and CS03 (Display BOM) for managing BOMs.
  BOM Types: Understand the different types of BOMs (e.g., single-level, multi-level) and how they relate to superior and subordinate objects.
  SAP Notes: Check SAP Notes for any known issues or patches related to BOM management that might address this error.
  User Permissions: Ensure that you have the necessary permissions to modify BOMs and related objects in the SAP system.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant for further assistance.