How To Fix APPLG755 - DCW: Class already exists; choose another class or specify overwrite

SAP Error Message - Details

• Message type: E = Error

• Message class: APPLG - Application Graphics Messages (Graphic Proxy Framework)

• Message number: 755

• Message text: DCW: Class already exists; choose another class or specify overwrite

What causes this issue?

The class to be created already exists.

How to fix this error?

You should choose another name for the class.
If you want to overwrite the existing class select the field
"Overwrite" and start the generation process again. The existing class
will then be deleted and the new one created.
If the field "Overwrite" is not available then the function has not yet
been released. In this case you can delete the old class manually in
the Class Builder (SE24) and then start the generation process again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message APPLG755 - DCW: Class already exists; choose another class or specify overwrite ?

  The SAP error message APPLG755 indicates that there is an attempt to create or define a class in the system that already exists. This typically occurs in the context of ABAP programming or when working with the ABAP Class Builder (transaction SE24).
  Cause:
  The error arises when:
  
  You are trying to create a new class with a name that is already in use by another class in the system.
  The system does not allow duplicate class names to maintain integrity and avoid confusion in the codebase.
  
  Solution:
  To resolve this error, you have a couple of options:
  
  
  Choose a Different Class Name:
  
  If you are creating a new class, simply select a different name that does not conflict with existing class names. Ensure that the new name adheres to the naming conventions used in your organization.
  
  
  
  Overwrite the Existing Class:
  
  If you intend to modify the existing class, you can choose to overwrite it. To do this:
  
  Open the existing class in the Class Builder (SE24).
  Make the necessary changes.
  Save and activate the class.
  
  
  Note that overwriting an existing class can have implications if other programs or classes depend on it, so proceed with caution.
  
  
  
  Check for Naming Conflicts:
  
  Use transaction SE80 or SE24 to search for the existing class name to understand its usage and dependencies before deciding to overwrite or rename.
  
  
  
  Related Information:
  
  Naming Conventions: Familiarize yourself with the naming conventions used in your organization to avoid conflicts in the future.
  Class Dependencies: Be aware of any dependencies that other programs or classes may have on the existing class before making changes.
  Transport Requests: If you are working in a development environment, ensure that any changes you make are properly included in transport requests for movement to other environments (e.g., QA, Production).
  
  Additional Tips:
  
  Always back up existing classes or document their functionality before making significant changes.
  Consider using version control or documentation practices to track changes made to classes over time.
  If you are unsure about the implications of overwriting a class, consult with your team or a senior developer for guidance.