How To Fix W_DSD_01020 - Wrong parameters when calling function &1

SAP Error Message - Details

• Message type: E = Error

• Message class: W_DSD_01 - Global message class for DSD

• Message number: 020

• Message text: Wrong parameters when calling function &1

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message W_DSD_01020 - Wrong parameters when calling function &1 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W_DSD_01020 Wrong parameters when calling function &1
  
  Cause:
  This warning message occurs when a function module is called with incorrect or inappropriate parameters. The function module expects certain parameters (importing, exporting, changing, or tables parameters) with specific data types, lengths, or values, but the calling program provides parameters that do not match these expectations.
  Common causes include:  
  
  Missing mandatory parameters.  
  Parameters passed with wrong data types or lengths.  
  Parameters passed in the wrong sequence (less common, as SAP function calls are usually named parameters).  
  Passing empty or initial values where the function expects filled values.  
  Using obsolete or incorrect function module interface.  
  Calling a function module with parameters that are not supported in the current SAP system version or patch level.
  
  
  Solution:
  
  
  Check the Function Module Interface:  
  
  Use transaction SE37 to display the function module &1 (the actual function module name will be shown in the message).  
  Verify the importing, exporting, changing, and tables parameters expected by the function module.
  
  
  
  Review the Calling Code:  
  
  Check the ABAP code or program that calls the function module.  
  Ensure that all mandatory parameters are passed correctly.  
  Verify that the data types and lengths of the parameters match the function module interface.  
  Make sure no extra or unsupported parameters are passed.
  
  
  
  Debug the Call:  
  
  Set a breakpoint before the function call and analyze the parameters being passed.  
  Check for any initial or incorrect values.
  
  
  
  Check SAP Notes and Documentation:  
  
  Sometimes, function modules change behavior or interface in different SAP versions or patches.  
  Search for SAP Notes related to the function module &1 or the error message W_DSD_01020.
  
  
  
  Correct the Parameter Passing:  
  
  Adjust the calling program to pass the correct parameters.  
  If the function module interface has changed, update the calling code accordingly.
  
  
  
  Test the Function Call:  
  
  After corrections, test the function call to ensure the warning no longer appears and the function behaves as expected.
  
  
  
  
  Related Information:
  
  Transaction SE37: To check function module interface and test function modules.  
  Transaction SE80 or SE38: To check the calling program or report.  
  SAP Help Portal: For function module documentation.  
  SAP Notes: Search for notes related to the function module or error message.  
  Debugging Tools: Use ABAP debugger to analyze parameter values at runtime.
  
  
  If you provide the actual function module name (replacing &1), I can help you with more specific guidance.