How To Fix FDT_WD_EXPRESSION078 - &1 cannot be dropped on itself

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_WD_EXPRESSION -

• Message number: 078

• Message text: &1 cannot be dropped on itself

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 FDT_WD_EXPRESSION078 - &1 cannot be dropped on itself ?

  The SAP error message FDT_WD_EXPRESSION078 typically occurs in the context of the SAP Fiori or SAP Web Dynpro applications when there is an attempt to drop or move an element onto itself. This can happen in various scenarios, such as when working with UI elements in the Fiori Elements or Web Dynpro applications.
  Cause:
  The error message indicates that there is an attempt to perform an operation (like dragging and dropping) where the target of the operation is the same as the source. This is not allowed because it does not make logical sense to drop an element onto itself.
  Solution:
  To resolve this error, consider the following steps:
  
  
  Check the Drag-and-Drop Operation: Ensure that you are not trying to drop an element onto itself. Review the drag-and-drop logic in your application to ensure that the source and target are different.
  
  
  Review the UI Configuration: If you are using a configuration tool (like SAP Web IDE or SAP Business Application Studio), check the configuration of the UI elements to ensure that they are set up correctly and that there are no circular references.
  
  
  Debugging: If you have access to the development environment, you can debug the application to see the exact point where the error occurs. This can help you identify the specific element that is causing the issue.
  
  
  Consult Documentation: Review the SAP documentation related to the specific UI technology you are using (Fiori, Web Dynpro, etc.) for any guidelines or best practices regarding drag-and-drop operations.
  
  
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as this may resolve known issues related to UI operations.
  
  
  Seek Help from SAP Community: If the issue persists, consider reaching out to the SAP Community or SAP Support for further assistance. Provide them with details about the scenario, including the steps to reproduce the error.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Documentation: Review the official SAP documentation for the specific version of the software you are using, as there may be version-specific considerations.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.