How To Fix RSES_DS109 - Extraction class &1 must implement interface &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RSES_DS - Messages DataSource-ESR References

• Message number: 109

• Message text: Extraction class &1 must implement interface &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 RSES_DS109 - Extraction class &1 must implement interface &2 ?

  The SAP error message RSES_DS109 indicates that there is an issue with the extraction class in the context of SAP Data Warehousing or SAP BW (Business Warehouse). Specifically, it means that the extraction class you are trying to use does not implement the required interface.
  Cause:
  
  Missing Implementation: The extraction class specified in the error message does not implement the necessary interface that is expected by the SAP system.
  Custom Development: If you are using a custom extraction class, it may not have been properly developed to implement the required interface.
  Incorrect Configuration: There may be a configuration issue where the wrong extraction class is assigned to a DataSource.
  
  Solution:
  
  Check the Extraction Class: Verify that the extraction class mentioned in the error message is correctly implemented. It should implement the required interface as specified in the error message.
  Implement the Required Interface: If you are developing a custom extraction class, ensure that it implements the necessary interface. You can refer to SAP documentation or existing standard classes for guidance on how to implement the interface correctly.
  Use Standard Classes: If possible, use standard extraction classes provided by SAP instead of custom ones, as they are more likely to be correctly implemented and tested.
  Review DataSource Configuration: Check the configuration of the DataSource in the SAP BW system to ensure that it is correctly pointing to the right extraction class.
  Consult SAP Notes: Look for any relevant SAP Notes that might address this specific error or provide additional guidance on the extraction class and interface requirements.
  
  Related Information:
  
  SAP Documentation: Refer to the SAP Help Portal for detailed information on DataSources, extraction classes, and interfaces.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Debugging: If you have access to the ABAP development environment, you can debug the extraction process to identify where the implementation is failing.
  
  By following these steps, you should be able to resolve the RSES_DS109 error and ensure that your extraction class is functioning correctly within the SAP BW environment.