How To Fix /IWFND/MED_SVC_MU_LA002 - No meta model identifier associated to root node and default query

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/MED_SVC_MU_LA -

• Message number: 002

• Message text: No meta model identifier associated to root node and default query

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/MED_SVC_MU_LA002 - No meta model identifier associated to root node and default query ?

  The SAP error message /IWFND/MED_SVC_MU_LA002 indicates that there is no meta model identifier associated with the root node and the default query in the context of SAP Gateway services. This error typically arises when there is a problem with the metadata configuration of an OData service.
  Causes:
  
  Missing Metadata: The OData service may not have the required metadata defined for the root node.
  Service Registration Issues: The service might not be properly registered in the SAP Gateway.
  Incorrect Model Configuration: The model might not be correctly configured in the service definition.
  Transport Issues: If the service was transported from one system to another, the metadata might not have been transported correctly.
  Service Activation: The OData service might not be activated or might be in an inconsistent state.
  
  Solutions:
  
  
  Check Service Registration:
  
  Go to the SAP Gateway Service Builder (transaction code SEGW) and ensure that the service is properly registered.
  Use transaction IWFND/MAINT_SERVICE to check if the service is active.
  
  
  
  Rebuild Metadata:
  
  In the Service Builder, you can regenerate the metadata for the service. Right-click on the service and select "Generate" to rebuild the metadata.
  
  
  
  Check Model Configuration:
  
  Ensure that the entity types and sets are correctly defined in the service model. Verify that the root node is correctly defined and associated with the appropriate entity set.
  
  
  
  Activate the Service:
  
  If the service is not activated, activate it using transaction IWFND/MAINT_SERVICE. Make sure that the service is listed and active.
  
  
  
  Check for Transport Issues:
  
  If the service was transported, check if all necessary objects were included in the transport request. You may need to re-transport the service or manually adjust the metadata in the target system.
  
  
  
  Debugging:
  
  If the issue persists, you can debug the service to see where the error is occurring. Use transaction SE80 or SEGW to set breakpoints in the service implementation.
  
  
  
  Check Logs:
  
  Check the SAP Gateway error logs using transaction IWFND/ERROR_LOG for more detailed error messages that might provide additional context.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  OData Documentation: Review the SAP OData documentation for best practices in service definition and metadata management.
  Community Forums: Consider searching or posting on SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the issue related to the error message /IWFND/MED_SVC_MU_LA002.