How To Fix FDT_EXPRESSIONS398 - Gateway &1 does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 398

• Message text: Gateway &1 does not exist

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 FDT_EXPRESSIONS398 - Gateway &1 does not exist ?

  The SAP error message FDT_EXPRESSIONS398 indicates that there is an issue with the Gateway service in the context of SAP Fiori or SAP Gateway. Specifically, the message states that the Gateway service referenced by &1 does not exist. This can occur in various scenarios, such as when trying to access a Fiori app or when using OData services.
  Causes:
  
  Service Not Registered: The OData service you are trying to access has not been registered in the SAP Gateway.
  Incorrect Service Name: The service name you are using might be incorrect or misspelled.
  Service Activation: The service might not be activated in the SAP Gateway.
  Authorization Issues: The user might not have the necessary authorizations to access the service.
  System Configuration: There could be issues with the system configuration or the backend system.
  
  Solutions:
  
  
  Check Service Registration:
  
  Go to the SAP Gateway Service Builder (transaction code /IWFND/MAINT_SERVICE).
  Check if the service is listed. If not, you need to register it.
  
  
  
  Register the Service:
  
  If the service is not registered, you can register it by clicking on the "Add Service" button and entering the service name and technical details.
  
  
  
  Activate the Service:
  
  If the service is registered but not activated, select the service and click on the "Activate" button.
  
  
  
  Verify Service Name:
  
  Double-check the service name you are using in your application or URL to ensure it is correct.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access the service. You may need to check roles and authorizations in transaction PFCG.
  
  
  
  Check System Configuration:
  
  Ensure that the backend system is properly configured and that there are no connectivity issues between the frontend and backend systems.
  
  
  
  Check Logs:
  
  Review the system logs (transaction SLG1) for any additional error messages that might provide more context about the issue.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  /IWFND/MAINT_SERVICE: Service Maintenance for OData services.
  /IWFND/GW_CLIENT: Gateway Client for testing OData services.
  SLG1: Application Log for checking logs related to the error.
  
  
  
  Documentation: Refer to SAP Help documentation for more details on OData services and Gateway configuration.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to the error message.
  
  
  By following these steps, you should be able to identify and resolve the issue related to the error message FDT_EXPRESSIONS398.