How To Fix /IWFND/OCI_MSG018 - Error while fetching the source metadata

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/OCI_MSG -

• Message number: 018

• Message text: Error while fetching the source metadata

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 /IWFND/OCI_MSG018 - Error while fetching the source metadata ?

  The SAP error message /IWFND/OCI_MSG018 typically indicates an issue related to the OData service in the SAP Gateway framework, specifically when there is a problem fetching the source metadata. This error can arise due to various reasons, including configuration issues, missing or incorrect service definitions, or problems with the underlying data model.
  Causes:
  
  Service Not Activated: The OData service may not be activated in the SAP Gateway.
  Authorization Issues: The user may not have the necessary authorizations to access the OData service.
  Incorrect Service URL: The URL used to access the OData service may be incorrect or malformed.
  Model Issues: There may be issues with the underlying data model or entity sets that the OData service is trying to expose.
  Backend System Issues: Problems in the backend system (like database connectivity issues) can also lead to this error.
  Transport Issues: If the service was recently transported from one system to another, it may not have been properly configured in the target system.
  
  Solutions:
  
  
  Activate the Service:
  
  Go to the SAP Gateway Service Builder (transaction code /IWFND/MAINT_SERVICE).
  Check if the service is listed and activated. If not, activate it.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access the OData service. This can be done by checking the roles assigned to the user.
  
  
  
  Verify Service URL:
  
  Double-check the URL being used to access the OData service. Ensure it is correctly formatted and points to the right service.
  
  
  
  Check the Data Model:
  
  Review the data model and entity sets defined in the OData service. Ensure that they are correctly defined and that there are no inconsistencies.
  
  
  
  Check Backend Connectivity:
  
  Ensure that the backend system is up and running and that there are no connectivity issues. You can test the connection using transaction codes like SM59 for RFC connections.
  
  
  
  Review Transport Configuration:
  
  If the service was transported, ensure that all necessary configurations and dependencies were also transported correctly.
  
  
  
  Check Logs:
  
  Use transaction SLG1 to check the application logs for any additional error messages that might provide more context about the issue.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the OData service to identify where the error occurs in the code.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific error message for any known issues or patches.
  Documentation: Review the official SAP documentation for OData services and the SAP Gateway for best practices and troubleshooting steps.
  Community Forums: Engage with the SAP Community or 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 causing the /IWFND/OCI_MSG018 error.