How To Fix FL033 - Interface is pregenerated and cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 033

• Message text: Interface is pregenerated and cannot be changed

What causes this issue?

The interface from FIELD and CONVERSION exits is generated by the
system. The names of the parameters are therefore already specified
and cannot be changed.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FL033 - Interface is pregenerated and cannot be changed ?

  The SAP error message FL033, which states "Interface is pregenerated and cannot be changed," typically occurs in the context of Financial Accounting (FI) or other modules where interfaces are generated for data processing. This error indicates that the interface you are trying to modify has already been precompiled or pregenerated, and therefore, it cannot be altered directly.
  Cause:
  
  Pregenerated Interface: The interface has been generated in advance for performance reasons, and any changes to it are restricted to maintain system integrity and performance.
  System Configuration: The system may be configured to prevent changes to certain interfaces once they are generated.
  Development Environment: If you are working in a development environment, the interface might have been generated in a different transport layer or client.
  
  Solution:
  
  
  Regenerate the Interface: If you need to make changes, you may need to regenerate the interface. This can typically be done by:
  
  Navigating to the relevant transaction (e.g., transaction code SE80 or SE37).
  Finding the interface in question.
  Making the necessary changes.
  Regenerating the interface after making the changes.
  
  
  
  Check for Locks: Ensure that there are no locks on the interface that might prevent changes. You can check this using transaction SM12.
  
  
  Transport Request: If the interface is part of a transport request, ensure that the transport is released and that you are working in the correct environment (development, quality, production).
  
  
  Consult Documentation: Review the SAP documentation or notes related to the specific interface you are working with. There may be specific guidelines or restrictions for that interface.
  
  
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance. They may provide insights specific to your system configuration or version.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE80 (Object Navigator), SE37 (Function Module), and SE11 (Data Dictionary) for managing interfaces.
  SAP Notes: Search for SAP Notes related to the error message FL033 in the SAP Support Portal. There may be specific notes addressing this issue with additional context or solutions.
  System Logs: Check system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to address the FL033 error and make the necessary changes to the interface.