How To Fix 00125 - No field defined for the function code

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 125

• Message text: No field defined for the function code

What causes this issue?

The function code field (OK code field) has not been defined on this
screen. If the user selects an application function (not a system
function), the system usually provides it in the function code field
(OK code field) as well as in SY-UCOMM. This is no longer possible.

System Response

The system is unable to inform the application of the current function
code. The application should not use field SY_COMM. This field always
contains the code of the last function chosen, which is not always
identical to the application-relevant code.

How to fix this error?

You should always define a field for the function code on every screen.
The Screen Painter always proposes such a field (OK category), you only
need to assign a name and include the definition in the ABAP program.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 00125 - No field defined for the function code ?

  The SAP error message "00125 No field defined for the function code" typically occurs when there is an issue with the configuration of a screen or a transaction in SAP. This error indicates that the system is unable to find a field that corresponds to the function code being executed. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Missing Field Definition: The function code being called does not have a corresponding field defined in the screen or program.
  Incorrect Screen Configuration: The screen might not be properly configured to handle the function code, leading to the absence of the required field.
  Custom Development Issues: If there are custom programs or enhancements, they may not have been implemented correctly, leading to this error.
  Transport Issues: If the configuration or development has been transported from one environment to another (e.g., from development to production), there may be inconsistencies.
  
  Solutions:
  
  
  Check Screen Configuration:
  
  Go to the screen painter (SE80 or SE41) and verify that the function code is correctly defined and that the corresponding fields are present.
  Ensure that the field is correctly linked to the function code in the screen attributes.
  
  
  
  Review Program Logic:
  
  If the error occurs in a custom program, review the code to ensure that all function codes are properly handled and that the necessary fields are defined.
  
  
  
  Debugging:
  
  Use the debugger to trace the execution of the program and identify where the error occurs. This can help pinpoint the missing field or misconfiguration.
  
  
  
  Check Transport Requests:
  
  If the issue arose after a transport, check the transport logs to ensure that all necessary objects were included and correctly transported.
  
  
  
  Consult Documentation:
  
  Review any relevant documentation or notes from SAP that may address this specific error or provide guidance on configuration.
  
  
  
  SAP Notes:
  
  Search the SAP Support Portal for any notes related to this error message. There may be specific patches or updates that address the issue.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE80 (Object Navigator), SE41 (Menu Painter), and SE93 (Transaction Codes) to help in troubleshooting.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Help Portal: Utilize the SAP Help Portal for detailed documentation on screen and function code configurations.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it. If the problem persists, consider reaching out to your SAP Basis or development team for further assistance.