How To Fix FH404 - Invalid call-up of function module &

SAP Error Message - Details

• Message type: E = Error

• Message class: FH - General ledger module messages

• Message number: 404

• Message text: Invalid call-up of function module &

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FH404 - Invalid call-up of function module & ?

  The SAP error message FH404, which states "Invalid call-up of function module &," typically occurs when there is an issue with the way a function module is being called in the ABAP code. This error can arise due to several reasons, including:
  Causes:
  
  Incorrect Function Module Name: The function module being called may not exist or may be misspelled.
  Improper Parameters: The parameters being passed to the function module may not match the expected parameters in terms of type or number.
  Authorization Issues: The user may not have the necessary authorizations to execute the function module.
  Function Module Not Active: The function module may not be activated or may be in a state that prevents it from being called.
  Namespace Issues: If the function module is in a different namespace, it may not be accessible from the current context.
  
  Solutions:
  
  Check Function Module Name: Verify that the function module name is correct and exists in the system. You can do this by using transaction SE37 (Function Builder).
  Review Parameters: Ensure that the parameters being passed to the function module match the expected parameters in both type and number. Check the documentation for the function module to confirm.
  Check Authorizations: Ensure that the user has the necessary authorizations to call the function module. You can check this in transaction SU53 after the error occurs.
  Activate Function Module: If the function module is not active, activate it in transaction SE37.
  Namespace Verification: If the function module is in a different namespace, ensure that you have the correct access and that the namespace is properly referenced in your code.
  
  Related Information:
  
  Transaction Codes: 
  
  SE37: Function Module Builder
  SE80: Object Navigator
  SU53: Authorization Check
  
  
  Debugging: If the issue persists, consider using the debugger to step through the code and identify where the call to the function module is failing.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional context.
  
  If you continue to experience issues after checking these areas, it may be helpful to consult with your SAP Basis or ABAP development team for further assistance.