How To Fix /IWNGW/CM_HUB013 - Failed to update the metadata cache on the Hub

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWNGW/CM_HUB -

• Message number: 013

• Message text: Failed to update the metadata cache on the Hub

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 /IWNGW/CM_HUB013 - Failed to update the metadata cache on the Hub ?

  The SAP error message /IWNGW/CM_HUB013 Failed to update the metadata cache on the Hub typically occurs in the context of SAP Gateway and can be related to issues with the metadata cache that is used for OData services. Here are some potential causes, solutions, and related information for this error:
  Causes:
  
  Network Issues: There may be connectivity problems between the SAP Gateway and the backend system, preventing the metadata from being updated.
  Authorization Issues: The user or service account may not have the necessary permissions to access or update the metadata cache.
  Configuration Errors: Incorrect configuration settings in the SAP Gateway or backend system can lead to this error.
  Service Activation: The OData service may not be properly activated or registered in the SAP Gateway.
  Cache Corruption: The metadata cache itself may be corrupted or out of sync with the backend system.
  
  Solutions:
  
  Check Connectivity: Ensure that the SAP Gateway can communicate with the backend system. You can test this by using transaction codes like SM59 to check RFC connections.
  Review Authorizations: Verify that the user or service account has the necessary authorizations to access the OData services and update the metadata cache.
  Reconfigure Services: If there are configuration issues, you may need to reconfigure the OData services. Use transaction IWFND/MAINT_SERVICE to check the status of the services and ensure they are activated.
  Clear Cache: You can try clearing the metadata cache. This can be done using transaction IWFND/CACHE and selecting the option to clear the cache.
  Check Logs: Review the application logs for more detailed error messages. You can use transaction SLG1 to check for logs related to the OData services and the Gateway.
  Restart Services: In some cases, restarting the SAP Gateway service or the backend system may resolve temporary issues.
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may address this specific error. You can search the SAP Support Portal for notes related to /IWNGW/CM_HUB013.
  Documentation: Review the official SAP documentation for SAP Gateway and OData services for best practices and troubleshooting steps.
  Community Forums: Consider checking SAP Community forums or other online resources where similar issues may have been discussed.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.