How To Fix CFD_REPOSITORY_API007 - CDS View &1 is not of type 4( based on union )

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_REPOSITORY_API - Messages for Repository API

• Message number: 007

• Message text: CDS View &1 is not of type 4( based on union )

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_REPOSITORY_API007 - CDS View &1 is not of type 4( based on union ) ?

  The SAP error message CFD_REPOSITORY_API007 indicates that there is an issue with a Core Data Services (CDS) view in your SAP system. Specifically, the error states that the CDS view you are trying to access or use is not of the expected type, which in this case is type 4 (based on union).
  Cause:
  
  Incorrect CDS View Type: The CDS view you are trying to use is not defined as a union view. In SAP, a union view is a specific type of CDS view that combines the results of two or more queries into a single result set.
  Misconfiguration: There may be a misconfiguration in the way the CDS view is defined or in the way it is being called.
  Versioning Issues: If the CDS view has been modified or if there are versioning issues, it may not be recognized as a union view.
  Data Source Issues: The underlying data sources for the CDS view may not be compatible or correctly defined.
  
  Solution:
  
  
  Check the CDS View Definition: 
  
  Go to the ABAP Development Tools (ADT) in Eclipse or the SAP GUI and check the definition of the CDS view. Ensure that it is indeed defined as a union view.
  The definition should include the UNION keyword if it is intended to be a union view.
  
  
  
  Review the SQL View: 
  
  If you have access to the SQL view associated with the CDS view, check its definition to ensure it aligns with the expected structure of a union view.
  
  
  
  Re-activate the CDS View: 
  
  Sometimes, simply reactivating the CDS view can resolve issues related to caching or versioning. Right-click on the CDS view in ADT and select "Activate".
  
  
  
  Check for Dependencies: 
  
  Ensure that all dependent objects (like other CDS views or database tables) are active and correctly defined.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or notes related to CDS views and unions to ensure compliance with best practices.
  
  
  
  Debugging: 
  
  If the issue persists, consider debugging the application or report that is trying to access the CDS view to identify where the error is being triggered.
  
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining and consuming semantically rich data models in SAP. Understanding the different types of CDS views (e.g., projection views, consumption views, union views) is crucial.
  Union Views: A union view combines multiple result sets into one. It is important to ensure that the fields in the union have compatible data types and structures.
  SAP Notes: Check SAP Notes for any known issues or patches related to CDS views and this specific error message.
  
  If you continue to experience issues after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.