How To Fix /IWBEP/SBOD135 - Function Import '&1' may not specify an Entity Set

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/SBOD -

• Message number: 135

• Message text: Function Import '&1' may not specify an Entity Set

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/SBOD135 - Function Import '&1' may not specify an Entity Set ?

  The SAP error message /IWBEP/SBOD135 Function Import '&1' may not specify an Entity Set typically occurs in the context of SAP Gateway and OData services. This error indicates that a function import in your OData service is incorrectly configured to reference an entity set, which is not allowed for function imports.
  Cause:
  
  Function Import Configuration: In OData services, function imports are designed to perform actions or retrieve data that do not directly correspond to a specific entity set. If a function import is mistakenly configured to reference an entity set, this error will be triggered.
  Service Definition Issues: The service definition in the Service Builder (transaction code SEGW) may have been incorrectly set up, leading to this error.
  Model Annotations: The annotations in the metadata might be incorrectly defined, causing the function import to be associated with an entity set.
  
  Solution:
  
  
  Check Function Import Configuration:
  
  Go to the Service Builder (transaction SEGW).
  Locate the function import that is causing the error.
  Ensure that the function import does not reference any entity set. It should be defined as a standalone operation.
  
  
  
  Modify the Function Import:
  
  If the function import is incorrectly set to return an entity set, change its return type to a complex type or a primitive type, depending on what the function is supposed to return.
  Remove any references to entity sets in the function import's configuration.
  
  
  
  Regenerate the Service:
  
  After making changes, regenerate the service by right-clicking on the project and selecting "Generate Runtime Objects."
  Activate the service in the Service Maintenance (transaction /IWFND/MAINT_SERVICE).
  
  
  
  Test the Function Import:
  
  Use a tool like Postman or the SAP Gateway Client (transaction /IWFND/GW_CLIENT) to test the function import and ensure it works as expected.
  
  
  
  Related Information:
  
  OData Services: Understand the difference between entity sets and function imports in OData services. Entity sets represent collections of entities, while function imports are used for operations that do not directly map to CRUD operations on entities.
  SAP Gateway Documentation: Refer to the official SAP Gateway documentation for detailed information on configuring OData services and understanding the service builder.
  Error Handling: Familiarize yourself with common error messages in SAP Gateway to troubleshoot similar issues in the future.
  
  By following these steps, you should be able to resolve the error and correctly configure your OData service.