How To Fix WG159 - You have called function module &1, which is no longer valid

SAP Error Message - Details

• Message type: E = Error

• Message class: WG - Messages for store order and investment buy

• Message number: 159

• Message text: You have called function module &1, which is no longer valid

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WG159 - You have called function module &1, which is no longer valid ?

  SAP Error Message:
  
  WG159 – "You have called function module &1, which is no longer valid"
  
  Cause:
  This error occurs when a program or process tries to call a function module that has been deleted, renamed, or is otherwise no longer available in the SAP system. The placeholder &1 in the message is replaced by the name of the function module that was attempted to be called.
  Common scenarios include:
  
  The function module was removed during a system upgrade or cleanup.
  The function module was replaced by a newer version or a different function module.
  Custom code or standard SAP code is referencing an obsolete function module.
  Transport or system inconsistencies where the function module is missing in the current system.
  
  
  Solution:
  
  
  Identify the Function Module:
  
  Check the exact function module name in the error message.
  Use transaction SE37 or SE80 to verify if the function module exists in the system.
  
  
  
  Check for Replacement or Alternative:
  
  Look for SAP Notes or documentation that mention the function module and its replacement.
  Sometimes SAP replaces function modules with new ones or recommends using BAPIs or other APIs.
  
  
  
  Update the Calling Code:
  
  If the function module is obsolete, modify the program or process to call the correct, valid function module.
  If it is custom code, update the code accordingly.
  If it is standard SAP code, check for OSS Notes or patches that fix the issue.
  
  
  
  Restore or Reimport the Function Module (if necessary):
  
  If the function module was deleted unintentionally, restore it from a backup or transport.
  Ensure the system is consistent and all necessary transports are imported.
  
  
  
  Check System Consistency:
  
  Run consistency checks or use transaction SNOTE to apply relevant SAP Notes.
  Verify that all required components and function modules are present.
  
  
  
  
  Related Information:
  
  Transaction SE37: Function Module Builder – to check existence and details of function modules.
  Transaction SE80: Object Navigator – to browse function modules and programs.
  SAP Notes: Search for the function module name and error message WG159 in the SAP Support Portal for specific notes.
  System Upgrade or Patch: This error often appears after system upgrades or patches where some function modules are deprecated.
  Custom Code Analysis: Use tools like ATC (ABAP Test Cockpit) or Code Inspector to find obsolete function module calls in custom code.
  
  
  Summary:
  The error WG159 indicates that a function module being called no longer exists or is invalid. The resolution involves identifying the obsolete function module, finding its replacement or restoring it, and updating the calling code accordingly. Always check SAP Notes and system consistency after upgrades or changes.