How To Fix PHIN420 - Material has been already assigned to superior object

SAP Error Message - Details

• Message type: E = Error

• Message class: PHIN - Phase In: Messages

• Message number: 420

• Message text: Material has been already assigned to superior object

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message PHIN420 - Material has been already assigned to superior object ?

  The SAP error message PHIN420, which states "Material has been already assigned to superior object," typically occurs in the context of SAP's Product Lifecycle Management (PLM) or similar modules where materials or components are being assigned to a superior object, such as a Bill of Materials (BOM) or a project.
  Cause:
  The error arises when you attempt to assign a material to a superior object (like a BOM or a project) that has already been assigned to that object. This can happen due to:
  
  Duplicate Assignment: The material is already linked to the superior object, and the system does not allow multiple assignments.
  Incorrect Data Entry: There may be a misunderstanding or error in the data entry process, leading to attempts to reassign the same material.
  System Configuration: Certain configurations in the SAP system may restrict the assignment of materials to superior objects.
  
  Solution:
  To resolve the PHIN420 error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Verify if the material is already assigned to the superior object. You can do this by checking the BOM or project structure where the material is supposed to be assigned.
  Use transaction codes like CS03 (Display BOM) or other relevant transactions to view the current assignments.
  
  
  
  Remove Existing Assignment:
  
  If the material is indeed assigned and you need to reassign it, you may need to first remove the existing assignment. This can be done using transaction codes like CS02 (Change BOM) or the relevant transaction for your specific context.
  
  
  
  Correct Data Entry:
  
  Ensure that you are entering the correct material number and superior object. Double-check for typos or incorrect entries.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to the specific module you are working with to understand the rules around material assignments.
  
  
  
  Check User Authorizations:
  
  Ensure that you have the necessary authorizations to make changes to the BOM or project. Lack of proper permissions can sometimes lead to unexpected errors.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot identify the cause, consider reaching out to your SAP support team or SAP directly for assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CS01 (Create BOM), CS02 (Change BOM), CS03 (Display BOM), and others that may be relevant to your specific task.
  SAP Notes: Check for any SAP Notes related to PHIN420 for additional insights or patches that may address the issue.
  Training and Documentation: Ensure that users involved in material assignments are trained and have access to documentation that outlines the processes and restrictions in place.
  
  By following these steps, you should be able to identify the cause of the PHIN420 error and take appropriate action to resolve it.