How To Fix FA309 - System error: Invalid calling of function module &

SAP Error Message - Details

• Message type: E = Error

• Message class: FA - Payment Advice Administration

• Message number: 309

• Message text: System error: Invalid calling of function module &

What causes this issue?

Function module &V1& was called with incorrect or missing parameters.

System Response

Processing cannot be continued.

How to fix this error?

Contact SAP to clarify whether the error can only be rectified by means
of a program correction or also by changing the parameters.
Give the name of function module &V1& in which the error occurred as
well as the other parameter &V2& which possibly refers to a key which
does not exist, in order to clarify the error situation.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FA309 - System error: Invalid calling of function module & ?

  The SAP error message FA309, which states "System error: Invalid calling of function module &," typically indicates that there is an issue with how a function module is being called within the SAP system. This error can arise from various causes, and understanding these can help in troubleshooting and resolving the issue.
  Causes of FA309 Error
  
  
  Incorrect Function Module Name: The function module being called may not exist or may be misspelled in the code.
  
  
  Authorization Issues: The user executing the function may not have the necessary authorizations to call the function module.
  
  
  Incorrect Parameters: The parameters being passed to the function module may not match the expected input types or formats.
  
  
  System Configuration Issues: There may be configuration issues within the SAP system that prevent the function module from being executed properly.
  
  
  Transport Issues: If the function module was recently transported from another system, there may be inconsistencies or missing dependencies.
  
  
  Version Mismatch: The function module may have been updated or changed, and the calling program may not be compatible with the new version.
  
  
  Solutions to FA309 Error
  
  
  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) to search for the function module.
  
  
  Review Authorization: Ensure that the user has the necessary authorizations to execute the function module. You can check this using transaction SU53 to analyze authorization failures.
  
  
  Validate Parameters: Review the parameters being passed to the function module. Ensure they match the expected types and formats as defined in the function module.
  
  
  Check System Configuration: Review the system configuration and settings related to the function module. Ensure that all necessary components are properly configured.
  
  
  Transport Check: If the function module was recently transported, check the transport logs for any errors or warnings. Ensure that all dependencies were included in the transport.
  
  
  Debugging: If you have access to the ABAP code, you can set breakpoints and debug the program to see where the error occurs and what parameters are being passed.
  
  
  Consult Documentation: Review any available documentation for the function module to understand its requirements and limitations.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for further assistance.
  
  
  Related Information
  
  Transaction Codes: SE37 (Function Builder), SE80 (Object Navigator), SU53 (Authorization Check), ST22 (Dump Analysis).
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the FA309 error and implement a suitable solution.