How To Fix DMEE_ABA120 - Format tree &2 (tree type &1) already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: DMEE_ABA - Messages for Data Medium Exchange Engine

• Message number: 120

• Message text: Format tree &2 (tree type &1) already exists

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 DMEE_ABA120 - Format tree &2 (tree type &1) already exists ?

  The SAP error message DMEE_ABA120 indicates that there is an attempt to create a format tree in the DMEE (Data Medium Exchange Engine) that already exists. This typically occurs when you are trying to create a new format tree with the same name or identifier as an existing one.
  Cause:
  
  Duplicate Format Tree Name: The most common cause of this error is that you are trying to create a new format tree with a name that is already in use.
  Incorrect Configuration: There may be a misconfiguration in the DMEE settings or an attempt to import a format tree that already exists in the system.
  
  Solution:
  
  
  Check Existing Format Trees: 
  
  Go to the DMEE transaction (usually transaction code DMEE) and check the list of existing format trees. Look for the tree type and name that you are trying to create.
  
  
  
  Rename or Delete: 
  
  If you find that the format tree already exists and you do not need it, you can delete it or rename your new format tree to avoid the conflict.
  
  
  
  Use a Unique Name: 
  
  When creating a new format tree, ensure that you use a unique name that does not conflict with existing trees.
  
  
  
  Review Import/Export Processes: 
  
  If you are importing format trees from another system or transport request, ensure that the trees being imported do not already exist in the target system.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or notes related to DMEE for any specific guidelines or best practices regarding format tree management.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  DMEE: Main transaction for managing format trees.
  SE11: Data Dictionary, where you can check the underlying database tables if needed.
  
  
  
  SAP Notes: 
  
  Check for any relevant SAP Notes that might address issues or provide additional guidance related to DMEE and format trees.
  
  
  
  Support: 
  
  If the issue persists and you cannot resolve it, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  
  
  By following these steps, you should be able to resolve the DMEE_ABA120 error and successfully manage your format trees in SAP.