How To Fix FDT_HRF157 - Assigned element &1 and view parameter &2 are of different types

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_HRF - FDT: HRF

• Message number: 157

• Message text: Assigned element &1 and view parameter &2 are of different types

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_HRF157 - Assigned element &1 and view parameter &2 are of different types ?

  The SAP error message FDT_HRF157 indicates that there is a type mismatch between an assigned element and a view parameter in the context of SAP Fiori or SAP UI5 applications, particularly when dealing with Field Data Management (FDM) or similar frameworks. This error typically arises when the data types of the elements being used do not match, which can lead to issues in data processing or display.
  Cause:
  
  Type Mismatch: The most common cause of this error is that the data type of the assigned element (e.g., a field or variable) does not match the expected data type of the view parameter. For example, if the assigned element is of type String and the view parameter is expecting an Integer, this error will occur.
  Incorrect Configuration: There may be a misconfiguration in the data model or the UI component where the types are not aligned.
  Changes in Data Model: If there have been recent changes to the data model or the structure of the application, it may lead to inconsistencies in the expected types.
  
  Solution:
  
  Check Data Types: Review the data types of both the assigned element and the view parameter. Ensure that they are compatible. You can do this by checking the definitions in the data model or the UI5 controller.
  Adjust Configuration: If there is a mismatch, adjust the configuration to ensure that both the assigned element and the view parameter are of the same type. This may involve changing the data type of one of the elements or modifying the way data is passed between them.
  Debugging: Use debugging tools to trace the data flow and identify where the mismatch occurs. This can help in pinpointing the exact location of the issue.
  Consult Documentation: Refer to SAP documentation or community forums for guidance on specific configurations related to the error message. There may be known issues or patches available.
  Testing: After making changes, thoroughly test the application to ensure that the error is resolved and that there are no further issues related to data types.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may 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 provide insights or solutions.
  Fiori/UI5 Documentation: Review the official SAP Fiori and UI5 documentation for best practices on data binding and type management.
  
  By following these steps, you should be able to resolve the FDT_HRF157 error and ensure that your SAP application functions correctly.