How To Fix /IWBEP/CM_V4S_RUN015 - Expand/Select not supported on backend side for actions

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4S_RUN -

• Message number: 015

• Message text: Expand/Select not supported on backend side for actions

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4S_RUN015 - Expand/Select not supported on backend side for actions ?

  The SAP error message /IWBEP/CM_V4S_RUN015 indicates that an operation (specifically, an "Expand" or "Select" operation) is not supported on the backend side for actions in an OData service. This typically occurs when you are trying to perform an operation that the backend system does not support for the specified entity or action.
  Cause:
  
  Unsupported Operation: The backend service does not support the "Expand" or "Select" operation for the action you are trying to execute. This can happen if the action is not designed to return related entities or if the action is not defined to handle such operations.
  Service Definition: The OData service may not be properly defined to allow for the requested operations. This could be due to missing annotations or incorrect service metadata.
  Backend Logic: The logic implemented in the backend for the action may not accommodate the requested parameters or may not be designed to handle the expand/select functionality.
  
  Solution:
  
  Check Service Metadata: Review the OData service metadata to ensure that the action is defined correctly and supports the operations you are trying to perform. You can access the service metadata by appending $metadata to the service URL.
  Review Action Implementation: Ensure that the action in the backend is implemented correctly and is capable of handling the requested parameters. If the action is not meant to return related entities, you may need to adjust your request.
  Modify Request: If the action does not support "Expand" or "Select", modify your request to exclude these operations. For example, if you are trying to expand a navigation property, consider fetching the related entities in a separate request instead.
  Check Annotations: Ensure that the necessary annotations are present in the service definition to support the operations you are trying to perform. This may involve adding or modifying annotations in the service implementation.
  Consult Documentation: Refer to the SAP documentation for the specific OData service you are using to understand its capabilities and limitations regarding actions and expand/select operations.
  
  Related Information:
  
  OData Protocol: Understanding the OData protocol and how it handles actions, functions, and entity relationships can provide insights into why certain operations may not be supported.
  SAP Gateway: If you are using SAP Gateway, familiarize yourself with the capabilities and limitations of the Gateway framework regarding OData services.
  Debugging Tools: Utilize debugging tools available in SAP (such as transaction codes like /IWFND/ERROR_LOG or /IWFND/MAINT_SERVICE) to analyze the error further and gather more context about the issue.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.