How To Fix LAW2_MESSAGES604 - System &1 is already assigned to external system &2

SAP Error Message - Details

• Message type: E = Error

• Message class: LAW2_MESSAGES - LAW 2.0 Message Class

• Message number: 604

• Message text: System &1 is already assigned to external system &2

Self-Explanatory Message

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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 LAW2_MESSAGES604 - System &1 is already assigned to external system &2 ?

  The SAP error message LAW2_MESSAGES604 indicates that a system (denoted as &1) is already assigned to an external system (denoted as &2). This typically occurs in the context of system landscape management, where systems are being configured for integration with external systems or services.
  Cause:
  
  Existing Assignment: The primary cause of this error is that the system you are trying to assign to an external system is already linked to another external system. This can happen if the system was previously configured for a different integration or if there was an attempt to reassign it without first removing the existing assignment.
  Configuration Issues: There may be configuration issues in the system landscape management settings that prevent the reassignment of the system.
  Data Consistency: There might be inconsistencies in the data that are causing the system to believe that the assignment is still active.
  
  Solution:
  
  
  Check Existing Assignments: 
  
  Go to the relevant transaction in SAP (such as SLD or Landscape Management) and check the current assignments of the system. Identify which external system it is currently assigned to.
  
  
  
  Remove Existing Assignment:
  
  If you need to reassign the system to a different external system, you will first need to remove the existing assignment. This can usually be done in the same transaction where you checked the assignments.
  
  
  
  Reassign the System:
  
  After removing the existing assignment, you can proceed to assign the system to the desired external system.
  
  
  
  Consult Documentation: 
  
  Refer to SAP documentation or notes related to system landscape management for specific steps and best practices.
  
  
  
  Check for Locks: 
  
  Ensure that there are no locks or ongoing processes that might be preventing changes to the system assignments.
  
  
  
  Contact SAP Support: 
  
  If the issue persists after following the above steps, consider reaching out to SAP support for further assistance, especially if this is a production environment.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SLD (System Landscape Directory) or LMDB (Landscape Management Database) for managing system assignments.
  SAP Notes: Search for SAP Notes related to LAW2_MESSAGES604 for any specific patches or updates that may address this issue.
  System Documentation: Review the system documentation for guidelines on managing external system assignments and landscape configurations.
  
  By following these steps, you should be able to resolve the error and successfully manage the system assignments in your SAP landscape.