How To Fix /IWBEP/SBOD025 - Navigation property '&1' is not unique within inheritance hierarchy

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/SBOD -

• Message number: 025

• Message text: Navigation property '&1' is not unique within inheritance hierarchy

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/SBOD025 - Navigation property '&1' is not unique within inheritance hierarchy ?

  The SAP error message /IWBEP/SBOD025 Navigation property '&1' is not unique within inheritance hierarchy typically occurs in the context of OData services when there is an issue with the definition of navigation properties in the data model, particularly when dealing with inheritance hierarchies.
  Cause:
  This error arises when there are multiple entities in an inheritance hierarchy that define the same navigation property name. In OData, navigation properties are used to define relationships between entities, and if two or more entities in the hierarchy have navigation properties with the same name, the OData service cannot determine which one to use, leading to ambiguity.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Inheritance Hierarchy: Review the inheritance hierarchy of the entities involved. Identify the entities that have the same navigation property name.
  
  
  Rename Navigation Properties: If possible, rename the navigation properties in the child entities to ensure that they are unique within the hierarchy. This will help the OData service to distinguish between them.
  
  
  Use Annotations: If renaming is not feasible, consider using annotations to provide additional context or to specify which navigation property should be used in certain contexts.
  
  
  Adjust OData Model: If you are using a CDS view or an OData model, ensure that the model is correctly defined and that the navigation properties are properly mapped.
  
  
  Regenerate the OData Service: After making changes to the entity definitions, regenerate the OData service to ensure that the changes are reflected in the service metadata.
  
  
  Test the Service: After making the necessary adjustments, test the OData service to ensure that the error is resolved and that the navigation properties work as expected.
  
  
  Related Information:
  
  OData Services: Understanding how OData services work and how to define entities and their relationships is crucial. Familiarize yourself with the OData protocol and SAP Gateway concepts.
  SAP Documentation: Refer to the official SAP documentation for guidance on defining entities, navigation properties, and handling inheritance in OData services.
  Debugging Tools: Use tools like the SAP Gateway Client (transaction /IWFND/GW_CLIENT) to test your OData services and inspect the metadata to identify issues with navigation properties.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service functions correctly.