How To Fix E0039 - Function module & does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 039

• Message text: Function module & does not exist

What causes this issue?

Function module &v1&, which should assume reponsibility for further
IDoc processing, has been stored for port &v2&.
However, this function module does not exist and the IDoc could not be
processed further.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Please change the port definition for port &v2& or create function
module &v1&.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0039 - Function module & does not exist ?

  The SAP error message E0039, which states that a function module does not exist, typically indicates that the system is trying to call a function module that is either not defined in the system or is not accessible in the current context. Here are some potential causes, solutions, and related information for this error:
  Causes:
  
  Function Module Not Created: The function module may not have been created or activated in the SAP system.
  Incorrect Name: There may be a typo or incorrect name in the code where the function module is being called.
  Transport Issues: If the function module was recently transported from another system, it may not have been imported correctly.
  Authorization Issues: The user may not have the necessary authorizations to access the function module.
  Namespace Issues: The function module might be in a different namespace that is not accessible in the current context.
  System Version: The function module may exist in a different version of SAP or may have been deprecated in the current version.
  
  Solutions:
  
  
  Check Function Module Existence:
  
  Use transaction code SE37 (Function Builder) to check if the function module exists in the system.
  If it does not exist, you may need to create it or check with your development team.
  
  
  
  Verify Name and Parameters:
  
  Double-check the spelling and parameters of the function module in the code where it is being called.
  Ensure that the function module is being called with the correct parameters.
  
  
  
  Transport Check:
  
  If the function module was recently transported, check the transport logs to ensure it was imported successfully.
  You may need to re-import the transport request if there were issues.
  
  
  
  Authorization Check:
  
  Ensure that the user has the necessary authorizations to execute the function module.
  You can check this using transaction SU53 after the error occurs.
  
  
  
  Namespace Verification:
  
  If the function module is in a different namespace, ensure that the calling program has access to that namespace.
  
  
  
  Consult Documentation:
  
  Check SAP Notes or documentation for any changes related to the function module, especially if you are on a newer version of SAP.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SE37: Function Builder
  SE80: Object Navigator
  SE11: Data Dictionary
  SE38: ABAP Editor
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to the function module in question.
  
  
  Debugging: If you have access, you can use the debugger to trace the execution and see where the error occurs.
  
  
  By following these steps, you should be able to identify the cause of the E0039 error and implement a solution. If the issue persists, consider reaching out to your SAP Basis or development team for further assistance.