How To Fix RSDHA188 - Model class '&1' does not implement interface '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDHA - HANA Analysis in BW

• Message number: 188

• Message text: Model class '&1' does not 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 RSDHA188 - Model class '&1' does not implement interface '&2' ?

  The SAP error message RSDHA188 indicates that there is an issue with a model class in the context of SAP BW (Business Warehouse) or SAP HANA. Specifically, it suggests that the model class specified does not implement the required interface. This can occur in various scenarios, such as when working with data models, transformations, or queries.
  Cause:
  
  Missing Implementation: The model class defined in the error message does not implement the interface that it is supposed to. This could be due to a coding error or an incomplete implementation.
  Incorrect Configuration: The model class may be incorrectly configured in the system, leading to a mismatch between the expected interface and the actual implementation.
  Transport Issues: If the model class was transported from another system, it might not have been transported correctly, leading to missing dependencies or incomplete implementations.
  Version Mismatch: There may be a version mismatch between the model class and the interface it is supposed to implement, especially if there have been recent updates or changes.
  
  Solution:
  
  Check Implementation: Verify that the model class indeed implements the required interface. You can do this by checking the class definition in the ABAP Workbench (SE80 or SE24).
  Correct Configuration: Ensure that the model class is correctly configured in the relevant settings. This may involve checking the settings in the BW modeling tools or HANA Studio.
  Re-transport: If the issue arose after a transport, consider re-transporting the model class and its dependencies to ensure that everything is in sync.
  Debugging: If you have access to the ABAP code, you can debug the execution to see where the implementation is failing. This may provide insights into what is missing or incorrectly configured.
  Consult Documentation: Review the SAP documentation for the specific version you are using to ensure that you are following the correct procedures for implementing model classes and interfaces.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide guidance on similar issues.
  
  Related Information:
  
  SAP BW and HANA Documentation: Familiarize yourself with the relevant documentation for SAP BW and HANA, especially regarding data modeling and class/interface implementation.
  ABAP Development: Understanding ABAP programming and class/interface concepts can be beneficial in troubleshooting this error.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.