How To Fix RJ121 - Not possible to handle DataSources for data marts

SAP Error Message - Details

• Message type: E = Error

• Message class: RJ - BW Extractor Handling Message Class

• Message number: 121

• Message text: Not possible to handle DataSources for data marts

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 RJ121 - Not possible to handle DataSources for data marts ?

  The SAP error message RJ121, which states "Not possible to handle DataSources for data marts," typically occurs in the context of SAP BW (Business Warehouse) or SAP BW/4HANA when there are issues related to the DataSources that are being used for data mart operations. This error can arise due to various reasons, and understanding the cause is essential for finding a solution.
  Causes of RJ121 Error
  
  
  DataSource Configuration Issues: The DataSource may not be properly configured or activated. This can include missing fields, incorrect mappings, or other configuration errors.
  
  
  Data Mart Settings: The settings for the data mart may not be correctly defined, leading to incompatibility with the DataSources.
  
  
  DataSource Compatibility: The DataSource may not be compatible with the data mart. This can happen if the DataSource is not designed to work with the specific data mart or if there are version mismatches.
  
  
  Transport Issues: If the DataSource was transported from another system, there may be inconsistencies or missing objects that prevent it from functioning correctly.
  
  
  Authorization Issues: Lack of proper authorizations for the user trying to access or manipulate the DataSource can also lead to this error.
  
  
  Solutions to RJ121 Error
  
  
  Check DataSource Configuration:
  
  Go to the DataSource in the SAP BW system and verify its configuration.
  Ensure that all necessary fields are included and correctly mapped.
  
  
  
  Review Data Mart Settings:
  
  Check the settings of the data mart to ensure that it is correctly set up to handle the DataSources you are trying to use.
  Make sure that the data mart is activated and that all necessary settings are in place.
  
  
  
  Validate DataSource Compatibility:
  
  Ensure that the DataSource is compatible with the data mart. Check the documentation for both to confirm compatibility.
  
  
  
  Transport Consistency:
  
  If the DataSource was transported, check for any missing objects or inconsistencies. You may need to re-transport or manually adjust the configuration.
  
  
  
  Check Authorizations:
  
  Verify that the user has the necessary authorizations to access and manipulate the DataSource. This may involve checking roles and permissions in the SAP system.
  
  
  
  Consult SAP Notes:
  
  Look for any relevant SAP Notes or documentation that may address this specific error. SAP frequently updates its knowledge base with solutions to common issues.
  
  
  
  System Logs:
  
  Check the system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  
  
  Recreate DataSource:
  
  As a last resort, if the DataSource is corrupted or misconfigured beyond repair, consider recreating it from scratch.
  
  
  
  Related Information
  
  SAP BW Documentation: Refer to the official SAP BW documentation for detailed information on DataSources and data marts.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if you have a support contract.
  
  By following these steps, you should be able to diagnose and resolve the RJ121 error in your SAP BW environment.