How To Fix AG501 - Program error: incorrect call of function &1 using parameter &2

AG501 - Overview

• Message type: E = Error

• Message class: AG - Nachrichten ATP-Server

• Message number: 501

• Message text: Program error: incorrect call of function &1 using parameter &2

What causes this issue?

Programming error: when function module &1 was called, parameter &2 was
not filled correctly.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AG501 - Program error: incorrect call of function &1 using parameter &2 ?

  The SAP error message AG501 indicates that there is a program error due to an incorrect call of a function module or method, specifically with the parameters being passed to it. This error typically arises when the function module is not being called with the expected parameters or when the parameters do not match the expected data types or structures.
  Causes:
  
  Incorrect Parameter Types: The parameters being passed to the function do not match the expected data types or structures defined in the function module.
  Missing Parameters: Required parameters are not being passed to the function call.
  Incorrect Function Module: The wrong function module is being called, which does not support the parameters being passed.
  Program Logic Errors: There may be logical errors in the program that lead to incorrect function calls.
  Changes in Function Module: If the function module has been modified (e.g., added or removed parameters), existing calls may no longer be valid.
  
  Solutions:
  
  Check Function