How To Fix /IWBEP/CM_V4_MED115 - Duplicate property name '&1' found for derived entity type '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 115

• Message text: Duplicate property name '&1' found for derived entity type '&2'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_MED115 - Duplicate property name '&1' found for derived entity type '&2' ?

  The SAP error message /IWBEP/CM_V4_MED115 Duplicate property name '&1' found for derived entity type '&2' typically occurs in the context of OData services when there are issues with the metadata definition of an entity type. This error indicates that there are two or more properties with the same name defined for a derived entity type, which is not allowed in OData specifications.
  Cause:
  
  Duplicate Property Definitions: The derived entity type is inheriting properties from a base entity type, and there is an attempt to define a property with the same name in the derived entity type.
  Model Configuration Issues: There may be inconsistencies or errors in the way the OData model is defined, leading to duplicate property names.
  Incorrect Annotations: Annotations or configurations in the metadata might be incorrectly set, causing the system to interpret the properties as duplicates.
  
  Solution:
  
  Check Entity Type Definitions: Review the definitions of the base and derived entity types in your OData model. Ensure that no property in the derived entity type has the same name as a property in the base entity type.
  Remove or Rename Duplicates: If you find duplicate property names, either remove the duplicate property from the derived entity type or rename it to ensure uniqueness.
  Review Annotations: Check any annotations or configurations that might be causing the duplication. Ensure that they are correctly defined.
  Regenerate Metadata: After making changes, regenerate the metadata for the OData service to ensure that the changes are reflected.
  Test the Service: After making the necessary adjustments, test the OData service to confirm that the error has been resolved.
  
  Related Information:
  
  OData Specifications: Familiarize yourself with OData specifications regarding entity types and properties to understand the constraints and rules.
  SAP Documentation: Refer to SAP Help Portal or relevant SAP notes for specific guidance on OData service development and troubleshooting.
  Debugging Tools: Use debugging tools available in SAP (like transaction codes SE80, SE11, or SE37) to analyze the data model and identify where the duplication is occurring.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service functions correctly without property name conflicts.