How To Fix TK520 - &1 &2 has changed the source client from &3 to &4

SAP Error Message - Details

• Message type: E = Error

• Message class: TK - Transport Organizer

• Message number: 520

• Message text: &1 &2 has changed the source client from &3 to &4

What causes this issue?

The source client has been changed by user "&V2&".
Old source client: "&V3&"
New source client: "&V4&".

System Response

The changes were succesfully completed.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TK520 - &1 &2 has changed the source client from &3 to &4 ?

  The SAP error message TK520 indicates that a change has occurred in the source client of a transport request. Specifically, it means that the source client for a transport request has been modified from one client to another, which can lead to inconsistencies or issues during the transport process.
  Cause:
  The error typically arises in the following scenarios:
  
  Manual Changes: A user may have manually changed the source client of a transport request in the transport directory or during the transport process.
  Transport Management System (TMS) Configuration: Incorrect configuration in the TMS can lead to changes in the source client.
  System Copy or Client Copy: If a system copy or client copy was performed, it might inadvertently change the source client for existing transport requests.
  Transport Request Modifications: If a transport request is modified after it has been created, it may lead to this error if the source client is altered.
  
  Solution:
  To resolve the TK520 error, consider the following steps:
  
  
  Check Transport Request: Review the transport request in question to verify the source client settings. Ensure that the source client is correctly set and matches the intended configuration.
  
  
  Review TMS Configuration: Check the Transport Management System configuration to ensure that the source and target clients are correctly defined. Make sure that there are no discrepancies in the configuration.
  
  
  Recreate Transport Request: If the transport request is not critical, consider deleting the problematic transport request and recreating it with the correct source client.
  
  
  Consult Logs: Look into the transport logs for any additional error messages or warnings that might provide more context about the change in the source client.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP Support for further assistance.
  
  
  Related Information:
  
  Transport Management System (TMS): Understanding how TMS works and how transport requests are managed can help prevent such issues in the future.
  Client Administration: Familiarity with client administration tasks in SAP can help in managing clients and understanding the implications of client changes.
  SAP Documentation: Refer to the official SAP documentation for detailed information on transport requests and client management.
  
  By following these steps, you should be able to identify the cause of the TK520 error and implement a suitable solution.