How To Fix /IWBEP/CM_MGW_GENER034 - Found non-unique Property name '&1' for field '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_GENER -

• Message number: 034

• Message text: Found non-unique Property name '&1' for field '&2'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_GENER034 - Found non-unique Property name '&1' for field '&2' ?

  The SAP error message /IWBEP/CM_MGW_GENER034 indicates that there is a non-unique property name in your OData service definition. This typically occurs when two or more properties in the same entity type or in the same context have the same name, which violates the uniqueness requirement for property names in OData services.
  Cause:
  
  Duplicate Property Names: The most common cause is that you have defined two properties with the same name in the same entity type or context.
  Inheritance Issues: If you are using inheritance in your data model, a property might be inherited from a base entity and also defined in a derived entity, leading to a conflict.
  Model Definition Errors: Errors in the model definition, such as incorrect annotations or misconfigurations, can also lead to this issue.
  
  Solution:
  
  Check Entity Definitions: Review the entity definitions in your OData service. Look for duplicate property names in the same entity type. Ensure that each property has a unique name.
  Rename Properties: If you find duplicate property names, rename them to ensure uniqueness. This may involve changing the name in the data model and updating any references to that property in your code.
  Review Inheritance: If you are using inheritance, ensure that properties are not being defined in both the base and derived entities. If a property is inherited, it should not be redefined in the derived entity.
  Regenerate the Service: After making changes, regenerate the OData service to ensure that the changes are reflected in the service metadata.
  Check Annotations: Ensure that any annotations or additional configurations do not inadvertently create conflicts in property names.
  
  Related Information:
  
  OData Specification: Familiarize yourself with the OData specification regarding entity types and properties to understand the uniqueness requirement.
  SAP Documentation: Refer to SAP's official documentation for the specific version of the OData service you are using, as there may be version-specific guidelines or best practices.
  Debugging Tools: Use debugging tools available in SAP Gateway or SAP Web IDE to trace the model and identify where the conflict arises.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service functions correctly without property name conflicts.