How To Fix SD_CDS_ENTITY002 - & is not target of a composition and not a root entity

SAP Error Message - Details

• Message type: E = Error

• Message class: SD_CDS_ENTITY - Messages for STOBS/entities

• Message number: 002

• Message text: & is not target of a composition and not a root entity

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 SD_CDS_ENTITY002 - & is not target of a composition and not a root entity ?

  The SAP error message SD_CDS_ENTITY002 typically indicates that there is an issue with the definition of a Core Data Services (CDS) view in the SAP system. Specifically, the error message states that the entity in question is not a target of a composition and is not a root entity. This can occur in scenarios where the CDS view is expected to be part of a hierarchy or composition but is not properly defined as such.
  Cause
  
  
  Entity Definition: The entity you are trying to access or use in your CDS view is not defined as a root entity or is not part of a composition. In CDS, root entities are the starting points for data retrieval, while composition entities are dependent on root entities.
  
  
  Incorrect Annotations: The annotations in the CDS view might not be correctly set up to define the relationships between entities.
  
  
  Modeling Issues: There may be issues in the underlying data model, such as missing associations or incorrect relationships between entities.
  
  
  Solution
  
  
  Check Entity Definition: Ensure that the entity you are trying to use is defined as a root entity or is correctly included in a composition. You can do this by reviewing the CDS view definition in the ABAP Development Tools (ADT) or in the SAP GUI.
  
  
  Review Annotations: Verify that the annotations in your CDS view are correctly defined. Make sure that the entity is properly annotated with @ObjectModel.compositionRoot: true if it is intended to be a root entity.
  
  
  Adjust Associations: If the entity is part of a composition, ensure that the associations are correctly defined. You may need to add or modify associations to establish the correct relationships between entities.
  
  
  Check for Dependencies: If your CDS view relies on other views or entities, ensure that those dependencies are correctly defined and accessible.
  
  
  Testing: After making changes, test the CDS view to ensure that the error is resolved. You can use transaction codes like SE11 or SE80 to check the definitions and test the views.
  
  
  Related Information
  
  
  CDS Views: Core Data Services (CDS) is a framework for defining semantically rich data models in SAP. Understanding how to define root and composition entities is crucial for effective CDS modeling.
  
  
  SAP Documentation: Refer to the official SAP documentation for Core Data Services for detailed guidelines on defining entities, associations, and annotations.
  
  
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  
  Debugging Tools: Utilize debugging tools in SAP to trace the execution of the CDS view and identify where the error is occurring.
  
  
  By following these steps, you should be able to resolve the SD_CDS_ENTITY002 error and ensure that your CDS views are correctly defined and functional.