How To Fix RD045 - Choose a DataSource first

SAP Error Message - Details

• Message type: E = Error

• Message class: RD - CO-PA Connection to SAP BW

• Message number: 045

• Message text: Choose a DataSource first

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 RD045 - Choose a DataSource first ?

  The SAP error message RD045, which states "Choose a DataSource first," typically occurs in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when a user is trying to execute a data extraction or reporting function without having selected a DataSource.
  Cause:
  The error is caused by the following reasons:
  
  No DataSource Selected: The user has not selected a DataSource in the relevant transaction or report.
  Incorrect Navigation: The user may have navigated to a function that requires a DataSource without first selecting one.
  Configuration Issues: There may be issues with the configuration of the DataSource in the system.
  
  Solution:
  To resolve the RD045 error, follow these steps:
  
  
  Select a DataSource:
  
  Go back to the screen where you encountered the error.
  Look for a dropdown or selection field for DataSources.
  Choose an appropriate DataSource that you want to work with.
  
  
  
  Check DataSource Availability:
  
  Ensure that the DataSource you are trying to select is active and available in the system.
  You can check this in the Data Warehousing Workbench (transaction RSA1) under the "DataSources" section.
  
  
  
  Review User Permissions:
  
  Ensure that you have the necessary permissions to access the DataSource. Lack of authorization can sometimes lead to issues in selecting DataSources.
  
  
  
  Consult Documentation:
  
  If you are unsure which DataSource to select, refer to the documentation or consult with your SAP BW/BI administrator for guidance on the appropriate DataSource for your reporting needs.
  
  
  
  Check for Configuration Issues:
  
  If the DataSource is not appearing as expected, there may be configuration issues. Check with your SAP Basis or BW team to ensure that the DataSource is properly configured and activated.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench) and RSO2 (DataSource Maintenance).
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific DataSource or the error message RD045.
  Training and Documentation: Consider reviewing SAP training materials or documentation related to DataSources and reporting in SAP BW/BI for a better understanding of how to work with DataSources effectively.
  
  By following these steps, you should be able to resolve the RD045 error and proceed with your data extraction or reporting tasks in SAP.