How To Fix UPWB138 - Current and new ABAP-00 class to be generated are identical

SAP Error Message - Details

• Message type: E = Error

• Message class: UPWB - Messages for Development Class UPWB

• Message number: 138

• Message text: Current and new ABAP-00 class to be generated are identical

What causes this issue?

If two Web interfaces generate the same ABAP-OO class, then this can
lead to inconsistencies.

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?

For this reason, assign a name to the ABAP-00 class to be generated.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UPWB138 - Current and new ABAP-00 class to be generated are identical ?

  The SAP error message UPWB138, which states "Current and new ABAP-00 class to be generated are identical," typically occurs during the process of generating or activating an ABAP class in the SAP system. This error indicates that the system is attempting to generate a new ABAP class that is identical to an existing one, which is unnecessary and leads to this error message.
  Cause:
  
  Duplicate Class Definition: The most common cause of this error is that the class you are trying to create or modify already exists with the same name and definition.
  Inconsistent State: There may be inconsistencies in the system where the class definition has not been properly updated or activated.
  Transport Issues: If you are working in a transport environment, there may be issues with the transport requests that have not been properly imported or activated.
  
  Solution:
  
  Check Existing Classes: Verify if the class you are trying to create already exists. You can do this by using transaction SE80 or SE24 to search for the class name.
  Compare Definitions: If the class exists, compare the current definition with the one you are trying to generate. If they are indeed identical, you do not need to generate it again.
  Activate the Class: If you have made changes to the class and it is not activated, try activating it using transaction SE80 or SE24.
  Delete Unused Classes: If you find that there are duplicate classes that are not needed, consider deleting or renaming them.
  Transport Request: If you are working in a transport environment, ensure that all transport requests are correctly imported and activated. Check for any inconsistencies in the transport logs.
  Clear Buffer: Sometimes, clearing the buffer can help resolve issues related to class generation. You can do this using transaction SE38 and running the report RS_ABAP_SOURCE_SCAN.
  
  Related Information:
  
  Transaction Codes: SE80 (Object Navigator), SE24 (Class Builder), SE38 (ABAP Editor).
  Documentation: Refer to SAP Help documentation for ABAP class management and troubleshooting.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to class generation and activation.
  
  If the problem persists after following these steps, consider reaching out to your SAP Basis or ABAP development team for further assistance.