How To Fix EC231 - Function codes beginning with '+' are modifiable

SAP Error Message - Details

• Message type: E = Error

• Message class: EC - Development environment: Menu Painter

• Message number: 231

• Message text: Function codes beginning with '+' are modifiable

What causes this issue?

Functions beginning with <LB>+</> are reserved for customer
enhancements and are thus not displayed in the SAP standard version.
You can access these functions using the SAP enhancement facility (menu
enhancements). After generation, the functions are visible in the menu.
The developer must determine in which status a function is active by
using the <LS>Active <-> Inactive</> function. This cannot be modified
with the enhancement facility.
You can process function codes for customer enhancements in a customer
function that must also be created using the SAP enhancement facility.
The SAP standard version does not react to these functions.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EC231 - Function codes beginning with '+' are modifiable ?

  The SAP error message EC231, which states "Function codes beginning with '+' are modifiable," typically occurs in the context of SAP GUI programming, particularly when dealing with screen elements and function codes in a dialog program.
  Cause:
  This error arises when you attempt to use a function code that starts with a '+' character in a context where it is not allowed. In SAP, function codes are used to define actions that can be triggered by user interactions, such as pressing buttons or menu items. Function codes that begin with '+' are reserved for specific system functions and are considered modifiable, meaning they can change the state of the application or the data being processed.
  Solution:
  To resolve this error, you should:
  
  
  Change the Function Code: Modify the function code you are using so that it does not start with a '+'. Use a different character or a standard naming convention for your function codes. For example, you can use letters or numbers that do not conflict with reserved function codes.
  
  
  Review the Code: Check the relevant ABAP code or screen configuration where the function code is defined. Ensure that you are not inadvertently using a '+' function code in your program logic.
  
  
  Consult Documentation: If you are unsure about which function codes are reserved or how to define your own, refer to the SAP documentation or guidelines for naming conventions for function codes.
  
  
  Testing: After making changes, test the application to ensure that the error is resolved and that the intended functionality is preserved.
  
  
  Related Information:
  
  Function Codes: In SAP, function codes are typically defined in the screen attributes or in the PBO (Process Before Output) and PAI (Process After Input) modules of an ABAP program.
  Reserved Function Codes: SAP has a set of reserved function codes that should not be used for custom functionality. Familiarize yourself with these to avoid conflicts.
  SAP Notes: Check SAP Notes for any specific guidance or updates related to this error message, as there may be additional context or solutions provided by SAP.
  
  By following these steps, you should be able to resolve the EC231 error and ensure that your SAP application functions correctly.