How To Fix AH641 - FM &1: parameter &2 is required

AH641 - Overview

• Message type: E = Error

• Message class: AH - IS-U billing (master data)

• Message number: 641

• Message text: FM &1: parameter &2 is required

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message AH641 - FM &1: parameter &2 is required ?

  The SAP error message AH641, which states "FM &1: parameter &2 is required," typically occurs when a function module (FM) is called without providing a required parameter. This error indicates that the function module expects a certain parameter to be passed to it, but it was not included in the call.
  
  Cause:
  
  Missing Parameter: The most common cause is that the function module is being called without one or more required parameters.
  Incorrect Function Module Usage: The function module may be used incorrectly, either by misunderstanding its interface or by not adhering to the expected input/output parameters.
  Changes in Function Module: If the function module has been modified (e.g., by an upgrade or a custom development), the required parameters may have changed.
  
  
  Solution:
  
  Check Function Module Documentation: Review the documentation for the function module to understand which parameters are required. You can do this by navigating to the function module in transaction SE37 or SE80 and