How To Fix /UI2/FDM_PARSER004 - Schema error

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/FDM_PARSER -

• Message number: 004

• Message text: Schema error

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI2/FDM_PARSER004 - Schema error ?

  The SAP error message /UI2/FDM_PARSER004 Schema error typically occurs in the context of SAP Fiori applications, particularly when there is an issue with the metadata or the structure of the OData service being consumed by the Fiori application. This error indicates that there is a mismatch or an issue with the expected schema of the OData service.
  Causes:
  
  Metadata Issues: The OData service's metadata might be incorrectly defined or not aligned with the expected structure.
  Version Mismatch: There could be a version mismatch between the Fiori application and the OData service.
  Service Activation: The OData service might not be properly activated in the SAP Gateway.
  Changes in Data Model: If there have been recent changes to the underlying data model (like changes in database tables or structures), the OData service may not reflect these changes.
  Caching Issues: Sometimes, caching issues can lead to outdated metadata being used.
  
  Solutions:
  
  
  Check OData Service Metadata:
  
  Use the SAP Gateway Client (transaction /IWFND/GW_CLIENT) to check the metadata of the OData service. Ensure that it is correctly defined and matches the expected schema.
  
  
  
  Activate/Reactivate OData Service:
  
  Go to transaction /IWFND/MAINT_SERVICE and check if the OData service is activated. If not, activate it. If it is already activated, try deactivating and reactivating it.
  
  
  
  Clear Cache:
  
  Clear the cache of the OData service. You can do this by using transaction /IWFND/CACHE to clear the cache for the OData service.
  
  
  
  Check for Updates:
  
  Ensure that both the Fiori application and the OData service are up to date. If there are any updates or patches available, apply them.
  
  
  
  Review Changes:
  
  If there have been recent changes to the data model or the OData service, review those changes to ensure they are correctly implemented.
  
  
  
  Check Logs:
  
  Use transaction SLG1 to check the application logs for any additional error messages or details that might provide more context about the issue.
  
  
  
  Consult Documentation:
  
  Refer to the SAP Help Portal or relevant SAP Notes for any known issues or additional troubleshooting steps related to the specific version of the Fiori application or OData service you are using.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes that might address this specific error or provide guidance on troubleshooting.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Fiori Launchpad: Ensure that the Fiori Launchpad is correctly configured and that the roles and authorizations are set up properly for the users experiencing the issue.
  
  By following these steps, you should be able to diagnose and resolve the /UI2/FDM_PARSER004 Schema error in your SAP environment.