How To Fix WUF071 - Calling error execute: Parameter &1 must be of type &2 and not type &3

SAP Error Message - Details

• Message type: E = Error

• Message class: WUF -

• Message number: 071

• Message text: Calling error execute: Parameter &1 must be of type &2 and not type &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WUF071 - Calling error execute: Parameter &1 must be of type &2 and not type &3 ?

  The SAP error message WUF071 indicates that there is a type mismatch in the parameters being passed to a function module or method. Specifically, the error message states that a parameter (denoted as &1) is expected to be of a certain type (denoted as &2), but it is actually of a different type (denoted as &3). 
  Cause:
  
  Type Mismatch: The most common cause of this error is that the data type of the variable being passed does not match the expected data type defined in the function module or method signature.
  Incorrect Data Declaration: The variable may have been declared with the wrong type or structure in the ABAP program.
  Changes in Function Module: If the function module or method has been changed (e.g., updated to expect a different type), and the calling program has not been updated accordingly, this error can occur.
  Interface Changes: If there are changes in the interface of the function module or method, and the calling program is not updated to reflect these changes, it can lead to this error.
  
  Solution:
  
  Check Parameter Types: Review the function module or method definition to confirm the expected data types for the parameters. Ensure that the types of the variables being passed match the expected types.
  Update Variable Declarations: If the variable is declared with the wrong type, update the declaration to match the expected type.
  Debugging: Use the ABAP debugger to inspect the values and types of the parameters being passed at runtime. This can help identify where the mismatch is occurring.
  Review Changes: If there have been recent changes to the function module or method, review those changes to ensure that the calling program is updated accordingly.
  Consult Documentation: If available, consult the documentation for the function module or method to understand the expected parameter types and any recent changes.
  
  Related Information:
  
  Function Module Documentation: Check the SAP documentation for the specific function module or method to understand its parameters and expected data types.
  ABAP Data Types: Familiarize yourself with ABAP data types and structures to ensure proper declarations.
  SAP Notes: Search for relevant SAP Notes that may address known issues or provide guidance on similar errors.
  Testing: After making changes, test the program thoroughly to ensure that the error is resolved and that the program behaves as expected.
  
  By following these steps, you should be able to identify and resolve the cause of the WUF071 error in your SAP environment.