How To Fix /IWBEP/CM_V4S_RUN020 - Expand for navigation '&1': $$filter has not been processed

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4S_RUN -

• Message number: 020

• Message text: Expand for navigation '&1': $$filter has not been processed

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4S_RUN020 - Expand for navigation '&1': $$filter has not been processed ?

  The SAP error message /IWBEP/CM_V4S_RUN020 typically occurs in the context of OData services when there is an issue with the processing of the $filter query option. This error indicates that the system was unable to process the filter criteria specified in the OData request, which can be due to various reasons.
  Causes:
  
  Invalid Filter Syntax: The filter expression provided in the request may have syntax errors or may not conform to the expected format.
  Unsupported Filter Operations: The OData service may not support certain filter operations or functions that are being used in the request.
  Data Type Mismatch: The filter may be trying to compare incompatible data types (e.g., comparing a string to a number).
  Service Configuration Issues: The OData service may not be properly configured to handle the requested filter.
  Backend Issues: There may be issues in the backend system (e.g., database constraints, missing data) that prevent the filter from being processed.
  
  Solutions:
  
  Check Filter Syntax: Review the $filter expression in your OData request for any syntax errors. Ensure that it follows the OData query language specifications.
  Validate Supported Operations: Consult the OData service documentation to ensure that the operations and functions used in the filter are supported.
  Data Type Verification: Ensure that the data types of the fields being compared in the filter are compatible. For example, if you are filtering on a numeric field, ensure that you are not passing a string.
  Service Configuration: Check the configuration of the OData service in SAP Gateway. Ensure that the service is properly set up to handle the requested operations.
  Debugging: Use transaction codes like /IWFND/ERROR_LOG to check for any additional error messages or logs that can provide more context about the issue.
  Test with Simplified Filters: Try using a simpler filter to see if it processes correctly. Gradually add complexity to identify the specific part of the filter causing the issue.
  
  Related Information:
  
  OData Documentation: Familiarize yourself with the OData protocol and its query options, especially the $filter syntax.
  SAP Gateway: Understand how SAP Gateway processes OData requests and how to troubleshoot common issues.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide patches related to OData services.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP support team or consulting the SAP Community for further assistance.