How To Fix RSDTM120 - Error when creating external hierarchy "&1".

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDTM - Data Mining Connection Messages

• Message number: 120

• Message text: Error when creating external hierarchy "&1".

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 RSDTM120 - Error when creating external hierarchy "&1". ?

  The SAP error message RSDTM120 typically occurs when there is an issue with creating an external hierarchy in the SAP BW (Business Warehouse) system. This error can arise due to various reasons, including configuration issues, data inconsistencies, or problems with the hierarchy structure itself.
  Causes of RSDTM120 Error
  
  Invalid Hierarchy Structure: The hierarchy you are trying to create may not conform to the required structure or may have invalid nodes.
  Missing Master Data: The master data required for the hierarchy may be missing or not properly maintained.
  Authorization Issues: The user may not have the necessary authorizations to create or modify hierarchies.
  Data Inconsistencies: There may be inconsistencies in the data that prevent the hierarchy from being created.
  Technical Issues: There could be technical issues with the BW system or the underlying database.
  
  Solutions to RSDTM120 Error
  
  Check Hierarchy Structure: Ensure that the hierarchy structure you are trying to create is valid. Verify that all nodes are correctly defined and that there are no circular references.
  Verify Master Data: Check if all required master data is available and correctly maintained. You can do this by reviewing the relevant master data tables.
  Review Authorizations: Ensure that the user has the necessary authorizations to create or modify hierarchies. You may need to consult with your SAP security team.
  Data Consistency Check: Run consistency checks on the data to identify and resolve any inconsistencies. You can use transaction codes like RSA1 to check for issues in the InfoObjects and InfoProviders.
  Check System Logs: Review the system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide fixes or workarounds for known issues.
  Recreate the Hierarchy: If the hierarchy is corrupted, consider deleting it and recreating it from scratch, ensuring that all prerequisites are met.
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), RSD1 (InfoObject Maintenance), and RSH1 (Hierarchy Maintenance).
  SAP Documentation: Refer to the official SAP documentation for detailed guidelines on creating and managing hierarchies in BW.
  Community Forums: Engage with SAP community forums or support channels for additional insights and shared experiences from other users who may have encountered the same error.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.