How To Fix CMD_HIERARCHY020 - Hierarchy with ID '&1' already exists.

SAP Error Message - Details

• Message type: E = Error

• Message class: CMD_HIERARCHY - Messages for CMD_HIERARCHY Gateway service

• Message number: 020

• Message text: Hierarchy with ID '&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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CMD_HIERARCHY020 - Hierarchy with ID '&1' already exists. ?

  The SAP error message CMD_HIERARCHY020 indicates that you are trying to create a hierarchy with an ID that already exists in the system. This typically occurs in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when working with hierarchies in InfoObjects or other data structures.
  Cause:
  
  Duplicate Hierarchy ID: The most common cause of this error is that you are attempting to create a new hierarchy using an ID that is already in use by another hierarchy.
  Incorrect Data Entry: There may have been a typographical error or misunderstanding regarding the hierarchy ID you intended to use.
  System Configuration: In some cases, the system may have been configured to prevent the creation of duplicate hierarchies, leading to this error.
  
  Solution:
  
  
  Check Existing Hierarchies: 
  
  Go to the relevant transaction (e.g., RSA1 for Data Warehousing Workbench) and check the existing hierarchies to see if the ID you are trying to use is already present.
  You can also use transaction codes like RSH1 (for Hierarchy Maintenance) to view existing hierarchies.
  
  
  
  Use a Different ID: 
  
  If the hierarchy ID you are trying to create already exists, consider using a different, unique ID for your new hierarchy.
  
  
  
  Delete or Modify Existing Hierarchy: 
  
  If the existing hierarchy is no longer needed, you can delete it. However, be cautious with this approach as it may affect reports or data models that rely on that hierarchy.
  Alternatively, you can modify the existing hierarchy if it needs to be updated rather than creating a new one.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or help resources for more information on managing hierarchies and best practices.
  
  
  
  Check for Transport Issues: 
  
  If you are working in a development environment and transporting changes to a production environment, ensure that the hierarchy IDs are not conflicting due to transport issues.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to hierarchy management.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), RSH1 (Hierarchy Maintenance), and others that may assist in managing hierarchies.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the CMD_HIERARCHY020 error and successfully manage your hierarchies in SAP.