How To Fix /IWBEP/CM_V4_RUNTIME047 - If-Modified-Since condition has not been processed

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_V4_RUNTIME -

• Message number: 047

• Message text: If-Modified-Since condition has not been processed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_V4_RUNTIME047 - If-Modified-Since condition has not been processed ?

  The SAP error message /IWBEP/CM_V4_RUNTIME047 If-Modified-Since condition has not been processed typically occurs in the context of OData services when the client sends a request with the If-Modified-Since HTTP header. This header is used for caching purposes, allowing the client to request data only if it has been modified since a specified date and time.
  Cause:
  
  Missing Implementation: The OData service may not be properly handling the If-Modified-Since header. This can happen if the service is not implemented to check for modifications based on timestamps.
  Data Not Modified: The data requested has not been modified since the specified date, and the service does not know how to respond to this condition.
  Service Configuration: The OData service might not be configured to support conditional requests, which includes handling the If-Modified-Since header.
  
  Solution:
  
  Check Service Implementation: Ensure that the OData service is implemented to handle the If-Modified-Since header. This may involve checking the service code to see if it correctly processes this header and returns the appropriate HTTP status codes (e.g., 304 Not Modified).
  Update Service Configuration: If the service is not configured to handle conditional requests, you may need to update the service configuration in the SAP Gateway or the backend system to enable this feature.
  Debugging: Use transaction codes like /IWFND/ERROR_LOG or /IWFND/TRACE to check for any underlying issues or logs that might provide more context on why the header is not being processed.
  Testing: Test the OData service with different scenarios, including requests with and without the If-Modified-Since header, to see how it behaves and ensure it is functioning as expected.
  
  Related Information:
  
  OData Protocol: Understanding the OData protocol and how it handles caching and conditional requests can provide insights into how to implement and troubleshoot these features.
  SAP Gateway: Familiarize yourself with the SAP Gateway and its capabilities regarding OData services, including how to configure and implement them.
  HTTP Status Codes: Review the relevant HTTP status codes (e.g., 200 OK, 304 Not Modified) to understand how they should be used in response to conditional requests.
  
  If the issue persists after checking the above points, consider reaching out to SAP support or consulting the SAP community for further assistance.