How To Fix /IWFND/CM_MGW402 - Subscription read failed

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW -

• Message number: 402

• Message text: Subscription read failed

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_MGW402 - Subscription read failed ?

  The SAP error message /IWFND/CM_MGW402 Subscription read failed typically occurs in the context of SAP Gateway and OData services when there is an issue with reading a subscription from the backend system. This error can arise due to various reasons, including configuration issues, data inconsistencies, or problems with the OData service itself.
  Causes:
  
  Service Configuration Issues: The OData service may not be properly configured or activated in the SAP Gateway.
  Authorization Problems: The user may not have the necessary authorizations to access the subscription data.
  Data Inconsistencies: There may be inconsistencies or missing data in the backend system that the OData service is trying to access.
  Network Issues: Connectivity problems between the SAP Gateway and the backend system can lead to this error.
  Service Versioning: If there are multiple versions of the OData service, the wrong version might be called.
  Backend Errors: Errors in the backend system (like ABAP programs or database issues) can prevent the service from retrieving the required data.
  
  Solutions:
  
  Check Service Activation: Ensure that the OData service is activated in the SAP Gateway using transaction code /IWFND/MAINT_SERVICE.
  Review Authorizations: Verify that the user has the necessary authorizations to access the OData service and the underlying data.
  Debugging: Use transaction code /IWFND/ERROR_LOG to check for detailed error logs that can provide more context about the failure.
  Check Backend System: Investigate the backend system for any inconsistencies or errors that might be affecting data retrieval.
  Network Connectivity: Ensure that there are no network issues between the SAP Gateway and the backend system.
  Service Version: Confirm that the correct version of the OData service is being called, especially if there are multiple versions available.
  Check for Updates: Ensure that both the SAP Gateway and the backend system are up to date with the latest patches and updates.
  
  Related Information:
  
  Transaction Codes:
  
  /IWFND/MAINT_SERVICE: To manage OData services.
  /IWFND/ERROR_LOG: To view error logs related to OData services.
  
  
  SAP Notes: Check for relevant SAP Notes that might address known issues related to this error.
  Documentation: Review the SAP Gateway and OData documentation for best practices in service configuration and troubleshooting.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.