How To Fix RTCMMD420 - Node &1 already exists under &2; nothing was copied

SAP Error Message - Details

• Message type: E = Error

• Message class: RTCMMD - Article Hierarchy

• Message number: 420

• Message text: Node &1 already exists under &2; nothing was copied

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 RTCMMD420 - Node &1 already exists under &2; nothing was copied ?

  The SAP error message RTCMMD420 indicates that there is an attempt to create or copy a node in a hierarchy (such as a master data hierarchy) that already exists. The message specifies that the node identified by &1 already exists under the parent node &2, and therefore, the operation cannot be completed.
  Cause:
  
  Duplicate Node: The primary cause of this error is that the node you are trying to create or copy already exists in the specified hierarchy.
  Incorrect Hierarchy Structure: There may be an issue with the hierarchy structure where the node is not supposed to exist under the specified parent.
  Data Integrity Issues: There could be data integrity issues in the system that are causing the hierarchy to have duplicate entries.
  
  Solution:
  
  Check Existing Nodes: Before attempting to create or copy a node, check the existing nodes under the specified parent node to confirm whether the node already exists.
  Modify the Node Name: If you need to create a new node, consider using a different name that does not conflict with existing nodes.
  Review Hierarchy Structure: Ensure that the hierarchy structure is correct and that the node is placed under the appropriate parent.
  Delete or Rename Existing Node: If the existing node is not needed, you may delete or rename it to allow for the new node to be created.
  Consult Documentation: Review SAP documentation or help resources for specific guidelines on managing nodes in the hierarchy.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using specific transaction codes related to master data management or hierarchy management in SAP.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Support: If the issue persists, consider reaching out to SAP support for further assistance, especially if it involves complex data structures or configurations.
  
  By following these steps, you should be able to resolve the RTCMMD420 error and successfully manage your hierarchy nodes in SAP.