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

FA309 - Overview

• 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