How To Fix /IWBEP/CM_OCI023 - Function Import with complex return type is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_OCI -

• Message number: 023

• Message text: Function Import with complex return type is not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_OCI023 - Function Import with complex return type is not supported ?

  The SAP error message /IWBEP/CM_OCI023 Function Import with complex return type is not supported typically occurs in the context of SAP Gateway and OData services when you are trying to call a function import that returns a complex type, which is not supported by the OData service.
  Cause:
  
  Complex Return Type: The function import you are trying to call is defined to return a complex type (like a structure or a table) rather than a simple type (like a single value or a primitive type).
  OData Version: The version of OData you are using may not support complex return types for function imports.
  Service Implementation: The OData service may not be correctly implemented to handle complex return types.
  
  Solution:
  
  Change Return Type: If possible, modify the function import to return a simple type instead of a complex type. This is the most straightforward solution if the business logic allows it.
  Use Entity Set: If the function import is intended to return multiple records, consider using an entity set instead of a function import. This way, you can retrieve data in a more standard way.
  Check OData Version: Ensure that you are using a version of OData that supports the features you need. If you are using an older version, consider upgrading.
  Modify Service Implementation: If you have control over the service implementation, you may need to adjust the way the function import is defined and how it returns data.
  Consult Documentation: Review the SAP documentation for OData services and function imports to ensure that you are following best practices and guidelines.
  
  Related Information:
  
  SAP Gateway: This is the technology that allows you to create OData services in SAP. Understanding how it works can help you troubleshoot issues.
  OData Protocol: Familiarize yourself with the OData protocol and its limitations regarding complex types.
  SAP Notes: Check for any relevant SAP Notes that might address this issue or provide additional guidance.
  Community Forums: Engage with the SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By addressing the root cause of the error and considering the solutions outlined above, you should be able to resolve the issue effectively.