How To Fix /IWFND/CM_MGW121 - Processing mode "OData on Backend": Error occurred in backend system.

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW -

• Message number: 121

• Message text: Processing mode "OData on Backend": Error occurred in backend system.

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 /IWFND/CM_MGW121 - Processing mode "OData on Backend": Error occurred in backend system. ?

  The SAP error message /IWFND/CM_MGW121 indicates that there was an issue while processing an OData request in the backend system. This error typically arises in the context of SAP Gateway services when the backend system encounters a problem while trying to fulfill the request.
  Causes:
  
  Backend System Issues: The backend system (like an SAP ERP or S/4HANA system) may be down, unresponsive, or experiencing performance issues.
  Authorization Problems: The user making the request may not have the necessary authorizations to access the data or execute the operation.
  Data Issues: There may be inconsistencies or issues with the data being requested, such as missing records or invalid data formats.
  Service Configuration: The OData service may not be properly configured or activated in the backend system.
  Network Issues: There could be network connectivity problems between the SAP Gateway and the backend system.
  Error in Business Logic: There may be an error in the business logic implemented in the backend service, such as ABAP code errors.
  
  Solutions:
  
  Check Backend System Status: Ensure that the backend system is up and running. You can do this by logging into the backend system and checking for any issues.
  Review Authorizations: Verify that the user has the necessary authorizations to access the OData service and the underlying data.
  Check Data Integrity: Investigate the data being accessed to ensure it is valid and complete. Look for any missing or corrupted records.
  Service Activation: Ensure that the OData service is activated in the backend system. You can check this in transaction /IWFND/MAINT_SERVICE.
  Network Connectivity: Test the network connection between the SAP Gateway and the backend system to ensure there are no connectivity issues.
  Debugging: If you have access to the backend system, you can debug the OData service to identify any errors in the business logic or ABAP code.
  Check Logs: Review the application logs in the backend system (transaction SLG1) for any error messages or warnings that could provide more context about the issue.
  
  Related Information:
  
  
  Transaction Codes:
  
  /IWFND/MAINT_SERVICE: To manage OData services.
  SLG1: To view application logs.
  SE80 or SE37: To check the implementation of the OData service or function modules.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues related to the error message.
  
  
  Documentation: Refer to the SAP Gateway documentation for more details on OData services and troubleshooting common issues.
  
  
  By following these steps, you should be able to identify and resolve the issue causing the /IWFND/CM_MGW121 error message.