How To Fix WN408 - Customizing table & key & & & identical with target system

SAP Error Message - Details

• Message type: E = Error

• Message class: WN - Plant master data maintenance (integrated)

• Message number: 408

• Message text: Customizing table & key & & & identical with target system

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WN408 - Customizing table & key & & & identical with target system ?

  The SAP error message WN408 indicates that there is a conflict in the customizing tables between the source and target systems during a transport request. Specifically, it means that the customizing table and key you are trying to transport already exist in the target system with identical values. This can happen during system copies, upgrades, or when transporting changes between systems.
  Cause:
  
  Identical Customizing Entries: The customizing table and key you are trying to transport already exist in the target system with the same values.
  Transport Overlap: The same customizing changes may have been transported to the target system from another source system.
  Manual Changes: Manual changes made directly in the target system that match the entries in the transport request.
  
  Solution:
  
  
  Check Existing Entries: Before transporting, check the target system for existing entries in the customizing table. You can do this by using transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to view the contents of the table.
  
  
  Adjust Transport Request: If the entries are indeed identical and you do not need to overwrite them, you can adjust your transport request to exclude those entries. This can be done by removing the specific entries from the transport request in the source system.
  
  
  Use the Transport Organizer: If you need to keep the changes, you can use the Transport Organizer (transaction SE09 or SE10) to manage the transport request and resolve conflicts.
  
  
  Manual Synchronization: If necessary, you can manually synchronize the entries between the source and target systems to ensure consistency.
  
  
  Consult Documentation: Review SAP documentation or notes related to the specific customizing table to understand its significance and the implications of overwriting existing entries.
  
  
  Related Information:
  
  Transport Management System (TMS): Understanding how the TMS works can help in managing transport requests effectively.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to the WN408 error message.
  System Logs: Review system logs for additional context or related errors that may provide more insight into the issue.
  
  If the problem persists or if you are unsure about the implications of any changes, it may be beneficial to consult with your SAP Basis team or an SAP consultant for further assistance.