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

FL033 - Overview

• 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