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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

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