How To Fix /IWBEP/CM_MGW_RT191 - Request caching is not allowed in this context

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 191

• Message text: Request caching is not allowed in this context

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT191 - Request caching is not allowed in this context ?

  The SAP error message /IWBEP/CM_MGW_RT191 Request caching is not allowed in this context typically occurs in the context of SAP Gateway and OData services. This error indicates that the system is trying to cache a request, but the current context does not allow for caching. Here are some details regarding the cause, potential solutions, and related information:
  Cause:
  
  Caching Configuration: The OData service or the specific request may have caching disabled. This can happen if the service is configured to not allow caching for certain operations or if the request is not cacheable due to its nature (e.g., POST requests).
  Service Implementation: The implementation of the OData service might not support caching for specific operations or entities.
  Request Context: The context in which the request is being made may not support caching, such as when dealing with certain types of data or operations that require real-time processing.
  
  Solutions:
  
  Check Service Configuration: Review the OData service configuration in the SAP Gateway. Ensure that caching is enabled for the service and that the specific operations you are trying to perform allow caching.
  Modify Request Type: If you are using a POST request, consider whether it can be changed to a GET request if appropriate, as GET requests are typically cacheable.
  Adjust Implementation: If you have access to the service implementation, check the code to ensure that it is designed to allow caching where appropriate. You may need to modify the service logic to support caching.
  Review Gateway Settings: Check the settings in the SAP Gateway for caching policies. Ensure that the settings align with your requirements for caching.
  Consult Documentation: Refer to the SAP documentation for OData services and caching to understand the specific requirements and limitations regarding caching in your context.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide guidance on caching issues in OData services.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Debugging: If you have access to the backend, consider debugging the OData service to trace the request and see where the caching is being disallowed.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.