How To Fix /IWBEP/GWS016 - Filter for property '&1' is not implemented

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/GWS -

• Message number: 016

• Message text: Filter for property '&1' is not implemented

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/GWS016 - Filter for property '&1' is not implemented ?

  The SAP error message /IWBEP/GWS016 Filter for property '&1' is not implemented typically occurs in the context of OData services when a filter is applied to a property that is not supported or implemented in the service. This can happen for various reasons, including:
  Causes:
  
  Unsupported Property: The property you are trying to filter on may not be defined in the OData service or is not supported for filtering.
  Service Implementation: The OData service may not have implemented the necessary logic to handle filtering for that specific property.
  Data Model Changes: If there have been recent changes to the data model or the OData service, the property might have been removed or altered.
  Versioning Issues: The client application may be using an outdated version of the OData service that does not support the requested filter.
  
  Solutions:
  
  
  Check OData Service Metadata: Review the metadata of the OData service to confirm whether the property you are trying to filter on is available and supported for filtering.
  
  You can access the metadata by appending $metadata to the service URL (e.g., http://<service-url>/$metadata).
  
  
  
  Update Service Implementation: If you have access to the service implementation, ensure that the filtering logic for the property is correctly implemented. This may involve modifying the service code to handle the filter appropriately.
  
  
  Use Supported Properties: If the property is not supported for filtering, consider using other properties that are supported. Check the documentation or metadata for a list of properties that can be filtered.
  
  
  Consult Documentation: Review the SAP documentation for the specific OData service you are using to understand its capabilities and limitations regarding filtering.
  
  
  Check for Updates: If you are using a third-party or custom OData service, check if there are any updates or patches available that might address this issue.
  
  
  Contact Support: If you are unable to resolve the issue, consider reaching out to SAP support or the developer of the OData service for assistance.
  
  
  Related Information:
  
  OData Protocol: Understanding the OData protocol and its filtering capabilities can help in troubleshooting such issues. OData supports various query options, including $filter, which allows clients to specify criteria for the data they want to retrieve.
  SAP Gateway: If you are working with SAP Gateway services, familiarize yourself with the Gateway service builder (transaction code SEGW) to see how the service is defined and what properties are available.
  Error Handling: Implement error handling in your application to gracefully manage such errors and provide meaningful feedback to users.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.