How To Fix DMEE120 - Tree &2 (&1) already exists

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 120

• Message text: Tree &2 (&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 DMEE120 - Tree &2 (&1) already exists ?

  The SAP error message DMEE120 indicates that there is an attempt to create a DMEE (Data Medium Exchange Engine) tree that already exists in the system. This error typically occurs when you are trying to create a new tree with the same name or identifier as an existing one.
  Cause:
  
  Duplicate Tree Name: The most common cause of this error is that you are trying to create a DMEE 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 tree that already exists.
  Transport Issues: If you are transporting DMEE trees between systems, there may be conflicts if the same tree is already present in the target system.
  
  Solution:
  
  Check Existing Trees: Before creating a new tree, check the existing DMEE trees in the system. You can do this by navigating to the DMEE transaction (usually transaction code DMEE) and reviewing the list of trees.
  Rename the New Tree: If you need to create a new tree, consider using a different name or identifier that does not conflict with existing trees.
  Modify Existing Tree: If the existing tree is the one you need, you can modify it instead of creating a new one. This can be done by selecting the tree and making the necessary changes.
  Delete Unused Trees: If there are old or unused trees that are no longer needed, you can delete them to free up the name for new trees.
  Transport Management: If the issue arises during a transport, ensure that the transport request does not include trees that already exist in the target system. You may need to adjust the transport request or handle the trees manually.
  
  Related Information:
  
  Transaction Codes: Use transaction code DMEE to manage DMEE trees.
  Documentation: Refer to SAP documentation for DMEE for detailed information on tree management and configuration.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or provide additional guidance related to DMEE trees.
  
  By following these steps, you should be able to resolve the DMEE120 error and manage your DMEE trees effectively.