How To Fix WS_TOOL804 - Referenced function module &1 does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: WS_TOOL - Message Class for Web Services and Virtual Endpoints

• Message number: 804

• Message text: Referenced function module &1 does not exist

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WS_TOOL804 - Referenced function module &1 does not exist ?

  Certainly! Here's a detailed explanation for the SAP error message WS_TOOL804: Referenced function module &1 does not exist:
  
  Error Message
  WS_TOOL804: Referenced function module &1 does not exist
  
  &1 is a placeholder for the name of the function module that the system could not find.
  
  
  Cause
  This error occurs when a tool, program, or process in SAP tries to call or reference a function module that does not exist in the system. Possible reasons include:
  
  The function module was deleted or not yet created.
  The function module name is misspelled or incorrect in the calling program or configuration.
  The function module belongs to a software component or add-on that is not installed or activated.
  Transport or system inconsistencies where the function module is missing in the current system.
  The function module is part of a newer SAP release or patch that is not applied in the current system.
  
  
  Solution
  
  
  Check the Function Module Name:
  
  Verify the exact name of the function module referenced in the error message.
  Use transaction SE37 to check if the function module exists.
  
  
  
  Correct the Reference:
  
  If the name is misspelled in the calling program or configuration, correct it.
  If the function module is custom, ensure it is created and activated.
  
  
  
  Check Software Components and Add-ons:
  
  Confirm that the relevant software component or add-on containing the function module is installed and active.
  If missing, install or activate the required component.
  
  
  
  Transport and System Consistency:
  
  Check if the function module was transported correctly from development to quality or production.
  Re-import transports if necessary.
  
  
  
  SAP Notes and Support:
  
  Search for SAP Notes related to the function module or the error message.
  Sometimes, SAP provides patches or corrections if the function module is missing due to a bug.
  
  
  
  Debugging:
  
  If the error occurs during runtime, debug the program to see where the function module is called.
  Check dynamic calls or indirect references that might cause the issue.
  
  
  
  
  Related Information
  
  Transaction SE37: Function Module Builder — to check or create function modules.
  Transaction SE80: Object Navigator — to search for function modules.
  Transaction SE91: Message Maintenance — to look up message WS_TOOL804.
  SAP Notes: Use SAP ONE Support Launchpad to search for notes related to WS_TOOL804 or the specific function module.
  Common Scenarios:
  
  Missing function modules in custom developments.
  Missing standard function modules after system upgrade or patch.
  Incorrect configuration referencing non-existent function modules.
  
  
  
  
  If you provide the exact function module name (the &1 parameter), I can help you check if it is standard or custom and suggest more specific steps.
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Function module referenced does not exist in the system (missing, deleted, or misspelled)
  
  
  Solution
  Verify existence in SE37, correct spelling, install missing components, check transports
  
  
  Related
  SE37, SE80, SE91, SAP Notes, debugging tools
  
  
  
  
  Let me know if you want help with a specific function module or scenario!