How To Fix CFD_REGISTRY_CHECK397 - CDS View &1 has Source Type '&2' which is not supported by Extensibility

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_REGISTRY_CHECK - Custom Fields: Messages for Registry Check

• Message number: 397

• Message text: CDS View &1 has Source Type '&2' which is not supported by Extensibility

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_REGISTRY_CHECK397 - CDS View &1 has Source Type '&2' which is not supported by Extensibility ?

  The SAP error message CFD_REGISTRY_CHECK397 indicates that there is an issue with the extensibility of a Core Data Services (CDS) view in your SAP system. Specifically, the error states that the CDS view you are trying to extend or modify has a source type that is not supported for extensibility.
  Cause:
  The error can occur due to the following reasons:
  
  Unsupported Source Type: The CDS view has a source type (like a database table, a view, or a specific type of join) that does not allow for extensibility. For example, if the CDS view is based on a database table that is not designed for extensibility, you will encounter this error.
  Technical Restrictions: Certain technical restrictions in the SAP system may prevent the extensibility of specific CDS views. This can include views that are defined with certain annotations or that use specific SQL constructs.
  Versioning Issues: If the CDS view has been updated or changed in a way that affects its extensibility, it may lead to this error.
  
  Solution:
  To resolve the CFD_REGISTRY_CHECK397 error, consider the following steps:
  
  
  Check Source Type: Review the source type of the CDS view in question. You can do this by checking the definition of the CDS view in the ABAP Development Tools (ADT) or in the SAP GUI. Ensure that the source type is one that supports extensibility.
  
  
  Use Extensible Views: If the CDS view is not extensible, consider using a different view that is designed for extensibility. SAP provides certain views that are explicitly marked as extensible.
  
  
  Create a New Extensible CDS View: If you need to extend the functionality of the existing CDS view, consider creating a new CDS view that references the original view but is designed to be extensible. You can use the @AbapCatalog.sqlViewName annotation to define a new view.
  
  
  Check Annotations: Review the annotations used in the CDS view. Some annotations may restrict extensibility. Ensure that the annotations are compatible with extensibility.
  
  
  Consult Documentation: Refer to the SAP documentation for guidelines on creating extensible CDS views. This can provide insights into best practices and supported configurations.
  
  
  SAP Notes and Support: If the issue persists, check for any relevant SAP Notes or reach out to SAP Support for assistance. There may be specific patches or updates that address this issue.
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining semantically rich data models in SAP. Understanding how to create and manage CDS views is crucial for effective data modeling.
  Extensibility: Extensibility in CDS views allows developers to enhance the functionality of existing views without modifying the original source. This is important for maintaining system integrity and upgrade compatibility.
  SAP Development Tools: Familiarize yourself with the ABAP Development Tools (ADT) in Eclipse, which provides a modern environment for developing and managing CDS views.
  
  By following these steps and understanding the underlying concepts, you should be able to address the CFD_REGISTRY_CHECK397 error effectively.