How To Fix FDT_WD_EXPRESSION013 - The value has been reset because it is not compatible to the result type

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_WD_EXPRESSION -

• Message number: 013

• Message text: The value has been reset because it is not compatible to the result type

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_EXPRESSION013 - The value has been reset because it is not compatible to the result type ?

  The SAP error message FDT_WD_EXPRESSION013 indicates that there is a type mismatch in an expression within a Web Dynpro application. Specifically, it means that a value has been reset because it does not match the expected result type of the expression. This typically occurs in scenarios where data types are not compatible, such as trying to assign a string to a numeric field or vice versa.
  Causes:
  
  Type Mismatch: The most common cause is that the data type of the value being assigned does not match the expected data type of the target variable or field.
  Incorrect Data Binding: If the data binding in the Web Dynpro application is not set up correctly, it can lead to this error.
  Expression Logic: The logic used in expressions may be flawed, leading to incompatible types being processed.
  User Input: If user input is being processed and the input does not conform to the expected type, this error can occur.
  
  Solutions:
  
  Check Data Types: Review the data types of the variables involved in the expression. Ensure that the value being assigned is compatible with the expected type.
  Modify Expressions: If you are using expressions in your Web Dynpro application, ensure that they are correctly defined and that the types match. You may need to cast or convert types explicitly.
  Validate User Input: If the error is related to user input, implement validation checks to ensure that the input conforms to the expected data type before processing it.
  Debugging: Use debugging tools to trace the execution of the application and identify where the type mismatch occurs. This can help pinpoint the exact location of the error.
  Review Data Bindings: Ensure that all data bindings in the Web Dynpro application are correctly configured and that they point to the right data types.
  
  Related Information:
  
  Web Dynpro Documentation: Refer to SAP's official documentation on Web Dynpro for more details on data types and expressions.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  By following these steps, you should be able to identify and resolve the issue causing the FDT_WD_EXPRESSION013 error in your SAP Web Dynpro application.