How To Fix /IWFND/CM_MGW321 - Service '&1' was created but its metadata could not be loaded.

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW -

• Message number: 321

• Message text: Service '&1' was created but its metadata could not be loaded.

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_MGW321 - Service '&1' was created but its metadata could not be loaded. ?

  The SAP error message /IWFND/CM_MGW321 indicates that a service was created, but the metadata for that service could not be loaded. This error typically occurs in the context of SAP Gateway services, particularly when working with OData services.
  Causes:
  
  Service Activation Issues: The service may not be properly activated in the SAP Gateway.
  Missing Metadata: The metadata for the service might be missing or not properly defined.
  Authorization Issues: The user may not have the necessary authorizations to access the service metadata.
  Technical Errors: There could be underlying technical issues, such as problems with the underlying data model or configuration errors.
  Transport Issues: If the service was transported from one system to another, there might be inconsistencies in the transport.
  
  Solutions:
  
  
  Check Service Activation:
  
  Go to the SAP Gateway Service Builder (transaction code /IWFND/MAINT_SERVICE).
  Ensure that the service is activated. If not, activate it.
  
  
  
  Check Metadata:
  
  Verify that the metadata is correctly defined in the service. You can do this by checking the service definition in the Service Builder.
  If the service is based on a data model, ensure that the data model is correctly defined and activated.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access the service. You can check this in transaction SU53 after attempting to access the service.
  
  
  
  Check Technical Configuration:
  
  Review the technical configuration of the service. Ensure that all necessary components are correctly configured.
  Check for any errors in the transaction SLG1 (Application Log) related to the service.
  
  
  
  Recreate the Service:
  
  If the service is still not working, consider deleting and recreating the service in the Service Builder.
  
  
  
  Check Transport Logs:
  
  If the service was transported, check the transport logs for any errors or warnings that might indicate issues during the transport process.
  
  
  
  Debugging:
  
  If the issue persists, you may need to debug the service to identify the root cause. Use transaction SE80 or SE11 to analyze the underlying data model and service implementation.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  /IWFND/MAINT_SERVICE: Manage OData services.
  SE80: Object Navigator for development.
  SE11: Data Dictionary for checking data models.
  SLG1: Application Log for checking logs related to the service.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues related to this error message.
  
  
  Documentation: Refer to the SAP Gateway documentation for more details on service creation and troubleshooting.
  
  
  By following these steps, you should be able to identify and resolve the issue related to the /IWFND/CM_MGW321 error message.