How To Fix SO2_TOOL044 - Symbols are not permitted in event handler names

SAP Error Message - Details

• Message type: E = Error

• Message class: SO2_TOOL - Messages for OXYGEN Page Editor

• Message number: 044

• Message text: Symbols are not permitted in event handler names

What causes this issue?

The name of the event handler &V1& contains invalid characters. The
name of an event handler cannot contain the following characters:
?$%&()=?{[]}^?+*~#-'.:,;<>|??@??`?!

System Response

The event handler was not created.

How to fix this error?

Enter a name for the event handler that does not contain special
characters.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SO2_TOOL044 - Symbols are not permitted in event handler names ?

  The SAP error message SO2_TOOL044 indicates that there are invalid characters (symbols) in the names of event handlers in your SAP application. This error typically arises when you are defining event handlers in your ABAP code or in the context of SAP UI5/Fiori applications, where naming conventions are strict.
  Cause:
  The error is caused by using special characters or symbols in the names of event handlers. Event handler names should follow specific naming conventions, which usually allow only alphanumeric characters and underscores. Common invalid characters include spaces, punctuation marks, and other special symbols.
  Solution:
  To resolve this error, you should:
  
  
  Review Event Handler Names: Check the names of all event handlers in your code. Ensure that they only contain valid characters (letters, numbers, and underscores).
  
  
  Rename Invalid Handlers: If you find any event handler names that contain invalid characters, rename them to conform to the naming conventions. For example:
  
  Change onClick@Button to onClick_Button
  Change handle-Event to handle_Event
  
  
  
  Check for Typos: Sometimes, the error may be due to a simple typo. Double-check the spelling and formatting of your event handler names.
  
  
  Test Changes: After making the necessary changes, re-run your application or code to ensure that the error is resolved.
  
  
  Related Information:
  
  Naming Conventions: Familiarize yourself with the naming conventions for event handlers in the specific context you are working in (e.g., ABAP, SAP UI5, etc.). This will help you avoid similar issues in the future.
  Documentation: Refer to the official SAP documentation for guidelines on naming conventions and best practices for event handling.
  Debugging Tools: Use debugging tools or syntax checkers available in the SAP development environment to catch such errors early in the development process.
  
  By following these steps, you should be able to resolve the SO2_TOOL044 error and ensure that your event handler names are compliant with SAP's requirements.