How To Fix UPF026 - Enter a valid function module

UPF026 - Overview

• Message type: E = Error

• Message class: UPF - Planning Functions

• Message number: 026

• Message text: Enter a valid function module

What causes this issue?

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

System Response

How to fix this error?

Check if the function module is valid. Display the valid function
modules using the F4 Help.

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 UPF026 - Enter a valid function module ?

  The SAP error message UPF026 ("Enter a valid function module") typically occurs when a user is trying to execute a function module in the SAP system, but the specified function module is either invalid, does not exist, or is not accessible due to authorization issues.
  Causes:
  
  Invalid Function Module Name: The function module name entered may be misspelled or does not exist in the system.
  Authorization Issues: The user may not have the necessary authorizations to access the specified function module.
  Transport Issues: The function module may not have been transported correctly to the system, or it may exist in a different system (e.g., development vs. production).
  Namespace Issues: The function module may be in a different namespace that the user does not have access to.
  
  Solutions:
  
  
  Check Function Module Name:
  
  Verify that the function module name is spelled correctly and exists in the system. You can do this by using transaction code SE37 (Function Builder) to search