How To Fix /IWBEP/CM_V4_GWS018 - OrderBy for property '&1' is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_GWS -

• Message number: 018

• Message text: OrderBy for property '&1' 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_V4_GWS018 - OrderBy for property '&1' is not supported ?

  The SAP error message /IWBEP/CM_V4_GWS018 OrderBy for property '&1' is not supported typically occurs in the context of OData services when a client attempts to use the $orderby query option on a property that is not supported for ordering in the OData service.
  Cause:
  
  Unsupported Property: The property specified in the $orderby clause is not defined as sortable in the OData service metadata. This can happen if the property is a complex type, a navigation property, or if it has not been explicitly marked as sortable in the service definition.
  Service Implementation: The underlying implementation of the OData service may not support ordering for certain properties due to business logic or data model constraints.
  Data Type Limitations: Some data types may not support ordering operations, leading to this error when such properties are included in the $orderby clause.
  
  Solution:
  
  Check Metadata: Review the OData service metadata (usually accessible via the $metadata endpoint) to confirm which properties are marked as sortable. Look for the Orderable attribute in the metadata.
  Modify Query: Adjust the OData query to remove the unsupported property from the $orderby clause. Use only those properties that are confirmed to be sortable.
  Service Implementation: If you have control over the OData service implementation, consider modifying the service to support ordering on the desired property. This may involve updating the service definition or the underlying data model.
  Consult Documentation: Refer to the SAP documentation for the specific OData service you are using to understand its capabilities and limitations regarding sorting.
  
  Related Information:
  
  OData Specification: Familiarize yourself with the OData protocol specifications, particularly regarding query options like $orderby.
  SAP Gateway: If you are using SAP Gateway, check the service configuration in the SAP Gateway Service Builder (transaction code SEGW) to ensure that the properties are correctly defined.
  Debugging: If you have access to the backend, consider debugging the OData service to see how it processes the $orderby clause and identify any potential issues in the implementation.
  
  By following these steps, you should be able to resolve the error and successfully use the $orderby functionality in your OData queries.