How To Fix /IWBEP/CM_MGW_RT123 - Navigation property '&1' named identical to property '&2' of entity '&3'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 123

• Message text: Navigation property '&1' named identical to property '&2' of entity '&3'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT123 - Navigation property '&1' named identical to property '&2' of entity '&3' ?

  The SAP error message /IWBEP/CM_MGW_RT123 indicates a conflict in the naming of navigation properties within an OData service. Specifically, it suggests that there are two properties with the same name in the context of an entity, which can lead to ambiguity when trying to access these properties.
  Cause:
  The error occurs when:
  
  A navigation property is defined with the same name as another property (either a navigation property or a regular property) within the same entity or in a related entity.
  This can happen due to incorrect model definitions, such as:
  
  Duplicate naming in the data model.
  Misconfiguration in the OData service definition.
  Changes in the underlying data model that were not reflected in the OData service.
  
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Entity Definition:
  
  Review the entity definition in your OData service to identify the conflicting properties. Look for properties with the same name in the same entity or in related entities.
  
  
  
  Rename Properties:
  
  If you find that two properties have the same name, consider renaming one of them to ensure that each property has a unique identifier. This may involve updating the data model and regenerating the OData service.
  
  
  
  Update 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:
  
  Once the changes are made, test the OData service to ensure that the error is resolved and that the navigation properties work as expected.
  
  
  
  Check for Related Entities:
  
  If the navigation property is related to another entity, ensure that the naming conventions are consistent and do not lead to conflicts.
  
  
  
  Related Information:
  
  OData Service Metadata: You can access the service metadata (usually at the URL .../$metadata) to review the definitions of entities and their properties.
  SAP Gateway: If you are using SAP Gateway, you may need to check the service implementation in the Gateway Service Builder (transaction code SEGW).
  Documentation: Refer to SAP documentation on OData services and entity modeling for best practices on naming conventions and property definitions.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service functions correctly without naming conflicts.