How To Fix CFD_REGISTRY_CHECK040 - CDS View &1 has no association to View &2

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 040

• Message text: CDS View &1 has no association to 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.

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_REGISTRY_CHECK040 - CDS View &1 has no association to View &2 ?

  The SAP error message CFD_REGISTRY_CHECK040 indicates that there is an issue with the Core Data Services (CDS) views in your SAP system. Specifically, it means that the CDS view you are trying to use (View &1) does not have an association to another CDS view (View &2) that it is expected to be linked to. This can occur in various scenarios, such as when you are trying to create a new CDS view, use an existing one, or when there are changes in the underlying data model.
  Cause:
  
  Missing Association: The primary cause of this error is that the CDS view you are working with does not have a defined association to the other view. Associations are necessary for linking data between different views.
  Incorrect View Definition: The view might be incorrectly defined, or the association might have been removed or not created properly.
  Changes in Data Model: If there have been recent changes to the data model or the underlying tables, it might lead to inconsistencies in the associations.
  Transport Issues: If the views were transported from one system to another, there might be missing dependencies or associations.
  
  Solution:
  
  Check View Definitions: Review the definitions of both CDS views (View &1 and View &2) to ensure that the necessary associations are defined. You can do this in the ABAP Development Tools (ADT) or in the SAP GUI.
  Create or Modify Associations: If the association is missing, you will need to create it. This can be done by adding an association in the CDS view definition. Ensure that the association is correctly defined with the appropriate fields.
  define view Z_CDS_View1
  as select from table1
  association [0..*] to Z_CDS_View2 as _View2
  on $projection.field1 = _View2.field1
  
  Activate the Views: After making changes, ensure that both views are activated. In SAP, changes to CDS views require activation to take effect.
  Check for Transport Issues: If the views were transported, ensure that all dependent objects were also transported correctly. You may need to re-transport the views or their dependencies.
  Consult Documentation: Refer to SAP documentation or notes related to CDS views for any specific guidelines or known issues.
  
  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 associations is crucial for effective use of CDS views.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message CFD_REGISTRY_CHECK040.
  Debugging: If the issue persists, consider using debugging tools to trace the execution and identify where the association is failing.
  
  By following these steps, you should be able to resolve the CFD_REGISTRY_CHECK040 error and ensure that your CDS views are correctly associated.