How To Fix CFD_REGISTRY_CHECK377 - Foreign Key Association &1 in CDS View &2 contains 'OR' condition

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 377

• Message text: Foreign Key Association &1 in CDS View &2 contains 'OR' condition

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_REGISTRY_CHECK377 - Foreign Key Association &1 in CDS View &2 contains 'OR' condition ?

  The SAP error message CFD_REGISTRY_CHECK377 indicates that there is an issue with a foreign key association in a Core Data Services (CDS) view. Specifically, it points out that the foreign key association contains an 'OR' condition, which is not allowed in the context of defining foreign key relationships in CDS views.
  Cause:
  The error occurs when a foreign key association in a CDS view is defined using an 'OR' condition. In SAP CDS views, foreign key associations must be defined in a way that they can be unambiguously resolved to a single target entity. Using 'OR' conditions can lead to ambiguity and inconsistency in the data model, which is why this is not permitted.
  Solution:
  To resolve this error, you need to modify the CDS view definition to eliminate the 'OR' condition in the foreign key association. Here are some steps you can take:
  
  
  Review the CDS View Definition: Check the definition of the CDS view where the error is occurring. Look for the foreign key associations that are defined with 'OR' conditions.
  
  
  Refactor the Association: Instead of using 'OR' conditions, consider using separate associations or restructuring the logic to ensure that each association can be resolved unambiguously. You may need to create additional views or use unions if necessary.
  
  
  Use Case Statements: If the logic requires conditional checks, consider using case statements or other conditional logic within the CDS view to handle the different scenarios without using 'OR' in the foreign key association.
  
  
  Test the Changes: After making the necessary changes, activate the CDS view and test it to ensure that the error is resolved and that the view behaves as expected.
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining and consuming semantically rich data models in SAP. It allows for the creation of views that can be used in various applications, including SAP Fiori apps.
  Foreign Key Associations: In CDS views, foreign key associations are used to define relationships between different entities. They help in navigating between related data and ensuring data integrity.
  SAP Documentation: For more detailed information, refer to the official SAP documentation on CDS views and foreign key associations. This can provide insights into best practices and guidelines for defining associations correctly.
  
  By following these steps and understanding the underlying principles, you should be able to resolve the CFD_REGISTRY_CHECK377 error effectively.