How To Fix UPWB190 - ABAP class &1 is overwritten

SAP Error Message - Details

• Message type: E = Error

• Message class: UPWB - Messages for Development Class UPWB

• Message number: 190

• Message text: ABAP class &1 is overwritten

What causes this issue?

You have specified an ABAP application class to be generated. The
specified class <AB>&V1&</><AB> </>is currently a subclass of standard
class <AB>CL_UPWB_BSP_APPL</>. Such classes are used to modify the
standard behavior of the application. The classes are not generated but
are created by the Designer so that modifications are not lost every
time a generation is executed.

System Response

If you regenerate the class, the current class <AB>&V1&</> will be
overwritten. It will no longer be a subclass of standard class
<AB>CL_UPWB_BSP_APPL</>. It will also be necessary to regenerate the
class in the Web Interface Builder each time the application is changed.
The advantage of the generated class is that it facilitates complex
modifications.

How to fix this error?

Generate the class only if the subclass does not meet your modification
requirements sufficiently. SAP recommends that you retain the old class
as back up, using another class name.
You will find more information in the F1 documentation on the "Generate
class" setting.

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 UPWB190 - ABAP class &1 is overwritten ?

  The SAP error message UPWB190, which states "ABAP class &1 is overwritten," typically occurs in the context of ABAP programming when there is a conflict with class definitions. This can happen when a class is redefined or when there are multiple versions of the same class in the system.
  Cause:
  
  
  Class Redefinition: The error usually indicates that an ABAP class is being redefined in a way that conflicts with an existing class. This can happen if:
  
  A class is being modified in a way that it conflicts with another class of the same name.
  There are multiple implementations of the same class in different packages or namespaces.
  
  
  
  Transport Issues: If classes are transported between systems (e.g., from development to quality assurance), and there are conflicting versions, this error can arise.
  
  
  Namespace Conflicts: If the class is defined in a global namespace and there is a local class with the same name, it can lead to this error.
  
  
  Solution:
  
  
  Check Class Definitions: Review the class definition in the ABAP Workbench (SE80 or SE24) to ensure that there are no conflicting definitions. Make sure that the class is not being redefined unintentionally.
  
  
  Namespace Management: Ensure that classes are defined in the appropriate namespaces to avoid conflicts. If you are working in a development environment, consider using a unique namespace for your classes.
  
  
  Transport Management: If the issue arises after a transport, check the transport logs and ensure that the correct version of the class is being transported. You may need to adjust the transport order or resolve conflicts in the transport directory.
  
  
  Class Activation: If you have made changes to the class, ensure that it is activated properly. Sometimes, classes may not activate correctly, leading to inconsistencies.
  
  
  Check for Dependencies: If the class is being used by other classes or programs, ensure that those dependencies are also updated and consistent.
  
  
  Debugging: If the issue persists, you may need to debug the program or class that is causing the error to identify the exact point of failure.
  
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE80 (Object Navigator) and SE24 (Class Builder) to manage and review class definitions.
  Documentation: Refer to SAP documentation for best practices on class design and namespace management.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  
  If the problem continues after trying the above solutions, consider reaching out to your SAP Basis or ABAP development team for further assistance.