How To Fix /IWBEP/SBOD156 - Function Import parameter name '&1' not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/SBOD -

• Message number: 156

• Message text: Function Import parameter name '&1' not unique

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/SBOD156 - Function Import parameter name '&1' not unique ?

  The SAP error message /IWBEP/SBOD156 Function Import parameter name '&1' not unique typically occurs in the context of SAP Gateway and OData services. This error indicates that there is a conflict with the parameter names defined in a function import within an OData service. Specifically, it means that there are multiple parameters with the same name, which is not allowed.
  Cause:
  
  Duplicate Parameter Names: The most common cause of this error is that the function import has been defined with parameters that have the same name. This can happen if the function import is created or modified incorrectly.
  Model Definition Issues: If the OData model is not properly defined or if there are inconsistencies in the metadata, it can lead to this error.
  Changes in the Service: If the service was modified (e.g., adding or renaming parameters) without proper adjustments in the metadata, it can lead to conflicts.
  
  Solution:
  
  
  Check Function Import Definition:
  
  Go to the SAP Gateway Service Builder (transaction code SEGW).
  Locate the function import that is causing the issue.
  Review the parameters defined for that function import and ensure that all parameter names are unique.
  
  
  
  Rename Duplicate Parameters:
  
  If you find duplicate parameter names, rename them to ensure that each parameter has a unique name.
  
  
  
  Regenerate the Service:
  
  After making changes to the function import, regenerate the service by right-clicking on the service and selecting "Generate Runtime Objects".
  This will update the metadata and ensure that the changes are reflected.
  
  
  
  Check Metadata:
  
  After regenerating, check the metadata of the OData service to ensure that the parameters are correctly defined and unique.
  
  
  
  Test the Service:
  
  Once the changes are made, test the OData service to ensure that the error is resolved and that the function import works as expected.
  
  
  
  Related Information:
  
  SAP Gateway: The SAP Gateway is a technology that allows you to connect devices, environments, and applications to SAP systems. It is often used to expose SAP data and functionality as OData services.
  OData Services: OData (Open Data Protocol) is a standard protocol for building and consuming RESTful APIs. In SAP, OData services are used to expose business data and operations.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SEGW (Service Builder) and IWFND/MAINT_SERVICE (Manage Services) for managing OData services.
  
  By following these steps, you should be able to resolve the error and ensure that your OData service functions correctly.