How To Fix RSAR490 - DataSource & source system & could not be read

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAR - Data Transfer and Metadata Maintenance

• Message number: 490

• Message text: DataSource & source system & could not be read

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSAR490 - DataSource & source system & could not be read ?

  The SAP error message RSAR490 indicates that a DataSource could not be read from the source system. This error typically occurs in the context of SAP BW (Business Warehouse) when trying to extract data from a source system, such as an SAP ERP system or a non-SAP system.
  Causes of RSAR490 Error
  
  
  DataSource Configuration Issues: The DataSource may not be properly configured in the source system. This could include missing or incorrect settings.
  
  
  Authorization Issues: The user executing the extraction may not have the necessary authorizations to access the DataSource in the source system.
  
  
  Source System Connectivity: There may be connectivity issues between the BW system and the source system. This could be due to network problems, incorrect RFC destination settings, or the source system being down.
  
  
  DataSource Activation: The DataSource may not be activated in the source system. If it is a new DataSource, it needs to be activated before it can be used.
  
  
  Transport Issues: If the DataSource was recently transported from one system to another, it may not have been properly activated or configured in the target system.
  
  
  Technical Issues: There could be technical issues in the source system, such as database problems or inconsistencies.
  
  
  Solutions to RSAR490 Error
  
  
  Check DataSource Configuration:
  
  Verify that the DataSource is correctly configured in the source system.
  Ensure that all necessary fields and settings are properly defined.
  
  
  
  Verify Authorizations:
  
  Check the user authorizations in the source system to ensure that the user has the necessary permissions to access the DataSource.
  
  
  
  Test Connectivity:
  
  Use transaction SM59 in the BW system to test the RFC connection to the source system. Ensure that the connection is successful.
  
  
  
  Activate DataSource:
  
  If the DataSource is new or has been modified, ensure that it is activated in the source system. You can do this in the DataSource maintenance transaction (e.g., RSA1).
  
  
  
  Check Transport Logs:
  
  If the DataSource was transported, check the transport logs for any errors or warnings that may indicate issues during the transport process.
  
  
  
  Review Source System Logs:
  
  Check the logs in the source system for any errors or warnings that may provide additional context for the issue.
  
  
  
  Consult SAP Notes:
  
  Look for relevant SAP Notes that may address known issues related to the specific DataSource or error message.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  RSA1: Data Warehousing Workbench
  SM59: RFC Destinations
  RSC1: DataSource Maintenance
  
  
  
  SAP Documentation: Refer to the official SAP Help Portal for detailed documentation on DataSources and troubleshooting extraction issues.
  
  
  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 diagnose and resolve the RSAR490 error effectively.