How To Fix /IWBEP/GWS018 - OrderBy for property '&1' and '&2' is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/GWS -

• Message number: 018

• Message text: OrderBy for property '&1' and '&2' is not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/GWS018 - OrderBy for property '&1' and '&2' is not supported ?

  The SAP error message /IWBEP/GWS018 OrderBy for property '&1' and '&2' is not supported typically occurs in the context of OData services when a client attempts to use the $orderby query option on properties that are not supported for ordering in the OData service.
  Cause:
  
  
  Unsupported Properties: The properties specified in the $orderby clause are not defined as sortable in the OData service metadata. This can happen if:
  
  The properties are not part of the entity's key or are not marked as sortable in the service definition.
  The properties are complex types or collections, which cannot be ordered directly.
  
  
  
  Service Implementation: The OData service may not have implemented the necessary logic to handle ordering for certain properties.
  
  
  Data Model Limitations: The underlying data model may not support ordering for the specified properties due to their data types or relationships.
  
  
  Solution:
  
  
  Check Metadata: Review the OData service metadata (usually accessible via the $metadata endpoint) to confirm which properties are marked as sortable. Ensure that the properties you are trying to order by are included in the metadata.
  
  
  Modify Query: Adjust your OData query to use only those properties that are supported for ordering. Remove any unsupported properties from the $orderby clause.
  
  
  Service Implementation: If you have control over the OData service implementation, consider modifying the service to support ordering for the desired properties. This may involve:
  
  Updating the data model to allow sorting.
  Implementing custom logic in the service to handle ordering for specific properties.
  
  
  
  Consult Documentation: Refer to the SAP documentation for the specific OData service you are using to understand its capabilities and limitations regarding sorting.
  
  
  Error Handling: Implement error handling in your application to gracefully manage cases where unsupported ordering is attempted.
  
  
  Related Information:
  
  OData Specification: Familiarize yourself with the OData protocol and its specifications regarding query options, including $orderby.
  SAP Gateway: If you are using SAP Gateway, check the configuration and settings related to the OData service.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error and successfully implement ordering in your OData queries.