How To Fix /IWBEP/CM_MGW_RT004 - Metadata cache on hub system outdated; execute OData request again

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 004

• Message text: Metadata cache on hub system outdated; execute OData request again

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT004 - Metadata cache on hub system outdated; execute OData request again ?

  The SAP error message /IWBEP/CM_MGW_RT004 indicates that the metadata cache on the hub system is outdated. This typically occurs in scenarios where the OData service has been modified or updated, but the changes have not been reflected in the cache of the hub system. Here’s a breakdown of the cause, solution, and related information for this error:
  Cause:
  
  Metadata Changes: The OData service's metadata has been changed (e.g., new fields added, existing fields modified, or services updated).
  Cache Expiration: The cache may not have been refreshed after the changes were made, leading to inconsistencies between the service definition and the cached metadata.
  System Configuration: There may be issues with the configuration of the OData service or the hub system that prevent the cache from being updated correctly.
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Refresh Metadata Cache:
  
  In the SAP Gateway system (the hub), you can refresh the metadata cache by executing the following transaction:
  
  Go to transaction code /IWFND/MAINT_SERVICE.
  Select the relevant OData service and click on the "Refresh" button to update the metadata cache.
  
  
  Alternatively, you can use the transaction /IWBEP/REG_SERVICE to register and refresh the service.
  
  
  
  Clear Cache:
  
  You can clear the cache for the OData service by using the transaction /IWFND/CACHE and selecting the option to clear the cache.
  
  
  
  Re-execute the OData Request:
  
  After refreshing or clearing the cache, re-execute the OData request that triggered the error.
  
  
  
  Check Service Activation:
  
  Ensure that the OData service is properly activated in the SAP Gateway system. You can check this in the same transaction /IWFND/MAINT_SERVICE.
  
  
  
  Check for Errors in Service Implementation:
  
  If the issue persists, check the implementation of the OData service for any errors or inconsistencies that may be causing the metadata to be out of sync.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to the OData service or the metadata cache.
  SAP Gateway Logs: Review the logs in the SAP Gateway system for any additional error messages or warnings that may provide more context about the issue.
  Documentation: Refer to the official SAP documentation for OData services and SAP Gateway for best practices on managing metadata and cache.
  
  By following these steps, you should be able to resolve the /IWBEP/CM_MGW_RT004 error and ensure that the metadata cache is up to date.