How To Fix /IWFND/CM_MGW_RT115 - Property field already exists name: '&1' ABAP field name '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW_RT -

• Message number: 115

• Message text: Property field already exists name: '&1' ABAP field name '&2'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_MGW_RT115 - Property field already exists name: '&1' ABAP field name '&2' ?

  The SAP error message /IWFND/CM_MGW_RT115 indicates that there is a conflict in the definition of properties in your OData service. Specifically, it means that a property with the name specified in the error message already exists in the context of the OData model, which is causing a duplication issue.
  Cause:
  
  
  Duplicate Property Definition: The error typically arises when you have defined a property in your OData service that has the same name as an existing property. This can happen if:
  
  You have multiple entities or types that define the same property name.
  There is a naming conflict due to inheritance or composition in your data model.
  You have made changes to the data model and did not properly regenerate or refresh the service.
  
  
  
  Incorrect Metadata: Sometimes, the metadata of the OData service may not be in sync with the underlying data model, leading to inconsistencies.
  
  
  Solution:
  
  
  Check for Duplicates: Review the entity types and properties defined in your OData service. Look for any duplicate property names and resolve the conflicts by renaming or removing the duplicates.
  
  
  Regenerate the Service: If you have made changes to the data model, ensure that you regenerate the OData service. This can be done using transaction code /IWFND/MAINT_SERVICE to maintain the service and refresh the metadata.
  
  
  Clear Cache: Sometimes, the issue may be related to caching. Clear the cache of the OData service using transaction code /IWFND/CACHE to ensure that the latest definitions are being used.
  
  
  Check Inheritance: If you are using inheritance in your data model, ensure that the properties are not being inherited in a way that causes naming conflicts.
  
  
  Review Annotations: If you are using annotations, ensure that they are correctly defined and do not introduce conflicts.
  
  
  Related Information:
  
  
  Transaction Codes:
  
  /IWFND/MAINT_SERVICE: To maintain OData services.
  /IWFND/CACHE: To clear the OData service cache.
  
  
  
  Debugging: You can use the SAP Gateway Client (transaction /IWFND/GW_CLIENT) to test your OData service and see the metadata being returned. This can help identify where the conflict is occurring.
  
  
  Documentation: Refer to the SAP Gateway documentation for best practices on defining OData services and managing properties to avoid such conflicts.
  
  
  By following these steps, you should be able to resolve the error and ensure that your OData service is functioning correctly.