How To Fix /IWFND/CM_SUBSCR005 - Subscription rejected by backend: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_SUBSCR -

• Message number: 005

• Message text: Subscription rejected by backend: &1

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_SUBSCR005 - Subscription rejected by backend: &1 ?

  The SAP error message /IWFND/CM_SUBSCR005 Subscription rejected by backend: &1 typically occurs in the context of SAP Gateway and OData services when a subscription request made by a client (like an SAP Fiori app) to a backend system is rejected. This can happen for various reasons, and understanding the cause is crucial for resolving the issue.
  Possible Causes:
  
  Backend System Issues: The backend system may be down, or there may be connectivity issues between the SAP Gateway and the backend.
  Authorization Issues: The user making the subscription request may not have the necessary authorizations to perform the action.
  Data Validation Errors: The data being sent in the subscription request may not meet the validation criteria set in the backend.
  Service Configuration: The OData service may not be properly configured to handle subscriptions, or the service might not be activated.
  Business Logic Errors: There may be specific business logic in the backend that is rejecting the subscription based on certain conditions.
  
  Solutions:
  
  Check Backend Connectivity: Ensure that the backend system is up and running and that there are no network issues preventing communication.
  Review Authorizations: Verify that the user has the necessary roles and authorizations to perform the subscription. You can check this in transaction SU53 or by reviewing the user's roles in PFCG.
  Validate Subscription Data: Review the data being sent in the subscription request to ensure it meets all required criteria. You can use transaction /IWFND/ERROR_LOG to check for detailed error messages.
  Service Activation: Ensure that the OData service is activated in the SAP Gateway. You can check this in transaction /IWFND/MAINT_SERVICE.
  Debugging: If the issue persists, consider debugging the backend service to identify any specific business logic that might be causing the rejection.
  Check Logs: Review the application logs in the backend system for any additional error messages or warnings that could provide more context.
  
  Related Information:
  
  Transaction Codes:
  
  /IWFND/MAINT_SERVICE: To manage OData services.
  /IWFND/ERROR_LOG: To view error logs related to OData services.
  SU53: To analyze authorization issues.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues related to this error message.
  Documentation: Review the SAP Gateway and OData documentation for best practices on setting up subscriptions and handling errors.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution. If the problem persists, consider reaching out to SAP support for further assistance.