How To Fix CFD_REGISTRY_CHECK166 - CDS View &1 does not select from underlying View &2

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 166

• Message text: CDS View &1 does not select from underlying View &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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_REGISTRY_CHECK166 - CDS View &1 does not select from underlying View &2 ?

  The SAP error message CFD_REGISTRY_CHECK166 indicates that there is an issue with a Core Data Services (CDS) view in your SAP system. Specifically, it means that the CDS view you are trying to use (denoted as &1) does not select from the underlying view (denoted as &2) as expected. This can occur for several reasons, and understanding the cause is essential for resolving the issue.
  Causes:
  
  
  Incorrect View Definition: The CDS view may not be correctly defined to select from the underlying view. This could be due to missing or incorrect annotations or SQL logic.
  
  
  View Activation Issues: The underlying view may not be activated or may have been changed without reactivating the dependent views.
  
  
  Dependency Issues: There may be a dependency issue where the underlying view has been modified or deleted, causing the CDS view to lose its reference.
  
  
  Transport Issues: If the views were transported from one system to another, there may be inconsistencies in the transport that affect the view definitions.
  
  
  Authorization Issues: Sometimes, authorization issues can prevent the CDS view from accessing the underlying view.
  
  
  Solutions:
  
  
  Check View Definition: Review the definition of the CDS view (&1) and ensure that it correctly references the underlying view (&2). Make sure that the SQL logic is correct and that all necessary fields are included.
  
  
  Activate Views: Ensure that both the CDS view and the underlying view are activated. You can do this in the ABAP Development Tools (ADT) or in the SAP GUI.
  
  
  Check Dependencies: Verify that the underlying view exists and is correctly defined. If it has been modified, ensure that all dependent views are reactivated.
  
  
  Review Transport Requests: If the views were transported, check the transport requests for any inconsistencies or errors. You may need to re-transport the views.
  
  
  Check Authorizations: Ensure that the user has the necessary authorizations to access both the CDS view and the underlying view.
  
  
  Debugging: If the issue persists, consider using debugging tools to trace the execution and identify where the selection is failing.
  
  
  Related Information:
  
  
  CDS Views: Core Data Services (CDS) is a framework for defining semantically rich data models in SAP. Understanding how CDS views work and their relationships is crucial for troubleshooting.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message CFD_REGISTRY_CHECK166.
  
  
  Documentation: Refer to the official SAP documentation for guidance on creating and managing CDS views.
  
  
  Community Forums: Engage with the SAP community forums or SAP support for additional insights and solutions from other users who may have encountered similar issues.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the CFD_REGISTRY_CHECK166 error message in your SAP system.