How To Fix /IWBEP/SBUIOD028 - The Property name &1 for field &2 is not unique.

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/SBUIOD -

• Message number: 028

• Message text: The Property name &1 for field &2 is not unique.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/SBUIOD028 - The Property name &1 for field &2 is not unique. ?

  The SAP error message /IWBEP/SBUIOD028 indicates that there is a problem with the uniqueness of property names in the context of an OData service. This error typically arises when there are multiple fields or properties defined with the same name within the same entity type or context, which violates the OData specification that requires property names to be unique within an entity.
  Cause:
  
  Duplicate Property Names: The most common cause of this error is that there are two or more properties defined with the same name in the same entity type.
  Model Definition Issues: If you are using a CDS view or a similar model definition, there might be a misconfiguration or duplication in the way fields are defined.
  Inconsistent Metadata: If the metadata of the OData service is not properly generated or updated, it may lead to inconsistencies that cause this error.
  
  Solution:
  
  Check for Duplicates: Review the entity type definition in your OData service and ensure that all property names are unique. Look for any duplicate fields in the underlying data model or CDS view.
  Modify Property Names: If you find duplicate property names, rename them to ensure uniqueness. This may involve changing the name in the data model or adjusting the OData service definition.
  Regenerate Metadata: After making changes, regenerate the metadata for the OData service. This can often be done through transaction /IWFND/MAINT_SERVICE or by using the relevant tools in your SAP environment.
  Check Annotations: If you are using annotations, ensure that they are not causing conflicts with property names.
  Test the Service: After making the necessary changes, test the OData service to ensure that the error is resolved and that the service behaves as expected.
  
  Related Information:
  
  OData Specification: Familiarize yourself with the OData protocol and its requirements regarding entity types and property names.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  Debugging Tools: Use debugging tools available in SAP to trace the issue further if the problem persists after making changes.
  Community Forums: Consider reaching out to SAP community forums or support channels for additional insights or similar experiences from other users.
  
  By following these steps, you should be able to resolve the error message /IWBEP/SBUIOD028 and ensure that your OData service functions correctly.