How To Fix RSRTS_CDS097 - Invalid data source: No joins or unions supported

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRTS_CDS - Messages Transient CDS Queries

• Message number: 097

• Message text: Invalid data source: No joins or unions supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSRTS_CDS097 - Invalid data source: No joins or unions supported ?

  The SAP error message RSRTS_CDS097: Invalid data source: No joins or unions supported typically occurs when you are trying to execute a query in SAP BW (Business Warehouse) or SAP HANA that involves a Composite Data Source (CDS) view, but the underlying data source does not support the operations you are attempting, such as joins or unions.
  Cause:
  
  Unsupported Operations: The error indicates that the data source you are using does not support joins or unions. This can happen if the data source is a simple table or view that does not allow for complex queries.
  Incorrect Data Source Configuration: The data source may not be properly configured to handle the query you are trying to execute.
  Query Design Issues: The query might be designed in a way that requires joins or unions that are not supported by the underlying data source.
  
  Solution:
  
  Check Data Source Type: Ensure that the data source you are using is capable of supporting the operations you are trying to perform. If it is a simple table, consider using a different data source that supports joins or unions.
  Modify the Query: If possible, simplify the query to avoid using joins or unions. This may involve breaking the query into multiple simpler queries or using a different approach to retrieve the data.
  Review CDS View Definition: If you are using a CDS view, check its definition to ensure that it is set up correctly and that it supports the operations you need. You may need to adjust the view to include the necessary joins or unions.
  Use a Different Query Tool: If the query is complex and requires advanced operations, consider using a different tool or method to retrieve the data, such as ABAP reports or other data extraction methods.
  Consult Documentation: Refer to SAP documentation for guidance on the specific data source and its capabilities. This can provide insights into what operations are supported.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide updates and patches that could resolve the issue.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Performance Considerations: If you are working with large datasets, consider performance implications when designing queries, as complex joins and unions can lead to performance degradation.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.