How To Fix SADL_GW_DT_CDS025 - Association #TO_COMPOSITION_ROOT in CDS view &1 defined multiple times

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW_DT_CDS - Messages CDS Checks

• Message number: 025

• Message text: Association #TO_COMPOSITION_ROOT in CDS view &1 defined multiple times

What causes this issue?

The association that is annotated with @ObjectModel.association.type:
#TO_COMPOSITION_ROOT is defined multiple times, either in the local CDS
view or through an inheritance from an underlying CDS view.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

To check the active annotations in the CDS view in Eclipse, right-click
Open With -> Active Annotations.
Define the association annotated with @ObjectModel.association.type:
#TO_COMPOSITION_ROOT only once.

Procedure for System Administrators

Contact the corresponding developer of the CDS view to correct the
error.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW_DT_CDS025 - Association #TO_COMPOSITION_ROOT in CDS view &1 defined multiple times ?

  The SAP error message SADL_GW_DT_CDS025 indicates that there is an issue with the definition of associations in a Core Data Services (CDS) view. Specifically, the error message states that the association #TO_COMPOSITION_ROOT is defined multiple times in the CDS view. This can lead to ambiguity when the system tries to resolve which association to use.
  Cause
  The primary cause of this error is that the association #TO_COMPOSITION_ROOT has been defined more than once within the same CDS view or in the context of the same data model. This can happen due to:
  
  Duplicate Definitions: The same association is inadvertently defined multiple times in the CDS view.
  Inheritance: If the CDS view is inheriting from another view that also defines the same association, it can lead to conflicts.
  Incorrect Annotations: Misconfiguration or incorrect annotations in the CDS view can also lead to this error.
  
  Solution
  To resolve the error, you can take the following steps:
  
  
  Check for Duplicate Definitions: Review the CDS view definition to ensure that the association #TO_COMPOSITION_ROOT is defined only once. If you find multiple definitions, remove or rename the duplicates.
  
  
  Review Inherited Associations: If your CDS view is inheriting from another view, check the parent view for the definition of #TO_COMPOSITION_ROOT. If it exists there, you may need to either remove it from the child view or adjust the inheritance structure.
  
  
  Use Aliases: If you need to keep multiple associations for different purposes, consider using aliases to differentiate them. This way, you can have multiple associations pointing to the same target but with different names.
  
  
  Check Annotations: Ensure that the annotations related to the associations are correctly defined and do not conflict with each other.
  
  
  Rebuild the CDS View: If the issue persists, consider rebuilding the CDS view from scratch, ensuring that you only define the necessary associations.
  
  
  Related Information
  
  CDS Views: Core Data Services (CDS) is a framework for defining semantically rich data models in SAP. Understanding how associations work in CDS views is crucial for effective data modeling.
  SAP Documentation: Refer to the official SAP documentation for CDS views and associations for more detailed information on best practices and guidelines.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  
  By following these steps, you should be able to resolve the SADL_GW_DT_CDS025 error and ensure that your CDS view is correctly defined without duplicate associations.