How To Fix RSDME779 - BW DataSource already exists for Model &1 and Source &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDME -

• Message number: 779

• Message text: BW DataSource already exists for Model &1 and Source &2

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 RSDME779 - BW DataSource already exists for Model &1 and Source &2 ?

  The SAP error message RSDME779 indicates that there is an attempt to create a DataSource in SAP BW (Business Warehouse) that already exists for a specific model and source. This error typically arises when you are trying to create a DataSource that has already been defined in the system.
  Cause:
  The primary cause of this error is that the DataSource you are trying to create is already present in the system for the specified model and source. This can happen due to:
  
  Duplicate attempts to create the same DataSource.
  An existing DataSource that was not properly deleted or was overlooked.
  A misconfiguration in the system where the same DataSource is being referenced multiple times.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Existing DataSources:
  
  Go to the DataSource maintenance transaction (e.g., RSA1 or RSO2) and check if the DataSource already exists for the specified model and source.
  If it exists, you can either use the existing DataSource or modify it as needed.
  
  
  
  Delete or Modify Existing DataSource:
  
  If the existing DataSource is not needed, you can delete it. Make sure to check dependencies before deletion.
  If you need to make changes, you can modify the existing DataSource instead of creating a new one.
  
  
  
  Review Naming Conventions:
  
  Ensure that the naming conventions for DataSources are followed correctly to avoid confusion and duplication.
  
  
  
  Check for Transport Issues:
  
  If you are working in a transport environment, ensure that the DataSource was not transported from another system, leading to duplication.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to DataSource creation and management for any specific guidelines or best practices.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  RSA1: Data Warehousing Workbench
  RSO2: DataSource Maintenance
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to DataSource management.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the RSDME779 error and successfully manage your DataSources in SAP BW.