How To Fix SEMC012 - This class exists in the old structure. Conversion not possible

SEMC012 - Overview

• Message type: E = Error

• Message class: SEMC - Messages for Function Group SEMC

• Message number: 012

• Message text: This class exists in the old structure. Conversion not possible

What causes this issue?

This class &V1&still exists in the old structure in the target system.
Creating the new class Include is not possible with the Correction
Workbench ( SCWB ) or the Note Assistant.

System Response

The Note Assistant or Correction Workbench shows a red traffic light for
the class.

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?

Convert the class include structure manually in transaction SE24. For
this, use the menu entry "Utilities -> Convert Local Class Types".
In a customer system, this function for conversion is normally not
active. It can, however, be activated by importing note number 830204.
Afterwards, you can copy your request again using the Correction
Workbench or the Note Assistant.

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 SEMC012 - This class exists in the old structure. Conversion not possible ?

  The SAP error message SEMC012, which states "This class exists in the old structure. Conversion not possible," typically occurs in the context of SAP's classification system, particularly when dealing with the migration or conversion of classification data from an older structure to a newer one.
  
  Cause:
  
  Old Structure: The error indicates that the class you are trying to work with is still linked to an old classification structure that is not compatible with the current system or the new structure you are trying to implement.
  Data Migration Issues: This can happen during data migration processes where the system expects a certain structure or format that the existing class does not conform to.
  
  Configuration Issues: There may be configuration settings that have not been updated to reflect the new structure, leading to inconsistencies.
  
  
  Solution:
  
  Check Class Structure: Verify the class structure in the SAP system. You may need to check if the class is still using the