How To Fix /PLMI/GSS_R2X020 - BOM &1 is already assigned to synchronization unit &2 (&3)

SAP Error Message - Details

• Message type: E = Error

• Message class: /PLMI/GSS_R2X -

• Message number: 020

• Message text: BOM &1 is already assigned to synchronization unit &2 (&3)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PLMI/GSS_R2X020 - BOM &1 is already assigned to synchronization unit &2 (&3) ?

  The SAP error message /PLMI/GSS_R2X020 BOM &1 is already assigned to synchronization unit &2 (&3) typically occurs in the context of SAP's Product Lifecycle Management (PLM) or similar modules where Bill of Materials (BOM) synchronization is involved. This error indicates that the specified BOM (Bill of Materials) is already linked to a synchronization unit, which prevents it from being assigned to another unit.
  Cause:
  
  Existing Assignment: The BOM you are trying to assign is already associated with another synchronization unit. This is a common scenario when multiple users or processes are trying to manage BOMs simultaneously.
  Data Integrity: The system is designed to maintain data integrity, ensuring that a BOM is not duplicated across multiple synchronization units, which could lead to inconsistencies.
  Configuration Issues: There may be configuration settings in the system that restrict the assignment of BOMs to multiple synchronization units.
  
  Solution:
  
  
  Check Existing Assignments: 
  
  Use transaction codes like CS03 (Display BOM) to check the current assignments of the BOM in question. Verify which synchronization unit it is currently assigned to.
  
  
  
  Reassign or Release:
  
  If you need to assign the BOM to a different synchronization unit, you may need to first remove the existing assignment. This can typically be done through the relevant transaction for managing synchronization units.
  Ensure that the BOM is not actively being used in any processes before attempting to reassign it.
  
  
  
  Consult Documentation: 
  
  Review the SAP documentation or help files related to BOM synchronization and management to understand the specific rules and processes involved.
  
  
  
  User Permissions: 
  
  Ensure that you have the necessary permissions to make changes to BOM assignments. Sometimes, restrictions can be due to user roles and authorizations.
  
  
  
  Contact Support: 
  
  If the issue persists and you cannot determine the cause, consider reaching out to your SAP support team or consulting with SAP support for further assistance.
  
  
  
  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.
  SAP Notes: Check SAP Notes for any known issues or patches related to BOM synchronization that might address this error.
  Training and Documentation: Ensure that users involved in BOM management are trained on the processes and understand the implications of BOM assignments.
  
  By following these steps, you should be able to resolve the error and manage your BOM assignments effectively.