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.