How To Fix /UI2/FDM400 - Cust operation is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/FDM -

• Message number: 400

• Message text: Cust operation is not supported

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 /UI2/FDM400 - Cust operation is not supported ?

  The SAP error message /UI2/FDM400 Cust operation is not supported typically occurs in the context of SAP Fiori applications, particularly when there is an issue with the configuration or the underlying data model. This error indicates that a custom operation you are trying to perform is not supported by the system.
  Causes:
  
  Unsupported Custom Operation: The operation you are trying to execute may not be supported by the Fiori application or the underlying OData service.
  Incorrect Configuration: There may be issues with the configuration of the Fiori app or the OData service that is being used.
  Authorization Issues: The user may not have the necessary authorizations to perform the operation.
  Backend Service Issues: The backend service might not be properly set up or might be experiencing issues.
  Version Mismatch: There could be a mismatch between the Fiori front-end and the back-end versions.
  
  Solutions:
  
  Check OData Service: Verify that the OData service being used by the Fiori application supports the operation you are trying to perform. You can do this by checking the service metadata in the SAP Gateway.
  Review Configuration: Ensure that the Fiori app is correctly configured in the SAP Fiori Launchpad and that all necessary parameters are set correctly.
  Authorization Check: Make sure that the user has the required authorizations to perform the operation. You can check this in the user roles and authorizations.
  Debugging: Use the SAP Gateway Client (transaction /IWFND/GW_CLIENT) to test the OData service directly and see if the operation works there. This can help isolate whether the issue is with the Fiori app or the backend service.
  Check Logs: Look at the application logs (transaction SLG1) and the system logs (transaction SM21) for any additional error messages that might provide more context.
  Update Components: Ensure that both the front-end and back-end components are up to date and compatible with each other.
  Consult Documentation: Refer to the official SAP documentation for the specific Fiori app you are using to see if there are any known issues or limitations.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to the specific Fiori app or OData service you are using.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  Fiori App Library: Use the SAP Fiori App Library to get detailed information about the app, including its capabilities and limitations.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis or development team for further investigation.