How To Fix APC_MESSAGE002 - Class &1 in application &2 does not exist anymore

SAP Error Message - Details

• Message type: E = Error

• Message class: APC_MESSAGE - Message class for ABAP Channels (ATC Check only)

• Message number: 002

• Message text: Class &1 in application &2 does not exist anymore

What causes this issue?

Class in application <(>&<)>1 does not exist anymore

System Response

You have created an APC application and later on deleted the maintained
class name from class builder.

How to fix this error?

Please maintain a valid class name in the APC application.

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 APC_MESSAGE002 - Class &1 in application &2 does not exist anymore ?

  The SAP error message APC_MESSAGE002 indicates that a specific class in a particular application no longer exists. This can occur in various scenarios, such as when a class has been deleted, renamed, or if there are inconsistencies in the application configuration.
  Cause:
  
  Class Deletion: The class referenced in the error message may have been deleted from the system.
  Renaming: The class might have been renamed, and the application is still trying to reference the old name.
  Transport Issues: If the class was transported from one system to another, there may have been issues during the transport process that caused the class to not be available in the target system.
  Configuration Issues: There may be configuration settings that are pointing to a class that no longer exists.
  Development Errors: If custom development has been done, there may be errors in the code that reference non-existent classes.
  
  Solution:
  
  Check Class Existence: Verify if the class mentioned in the error message exists in the system. You can do this by using transaction SE24 (Class Builder) to search for the class.
  Review Change Logs: If the class was deleted or renamed, check the change logs or transport logs to understand what changes were made and when.
  Recreate or Restore Class: If the class was deleted and is needed, you may need to recreate it or restore it from a backup or transport request.
  Update References: If the class has been renamed, update any references in the application to point to the new class name.
  Check Configuration: Review the configuration settings in the application to ensure they are pointing to the correct classes.
  Debugging: If the issue persists, consider debugging the application to trace where the error is being triggered and gather more context.
  
  Related Information:
  
  Transaction Codes: Use SE24 for class management, SE80 for object navigation, and SE37 for function module management if the class is related to function modules.
  SAP Notes: Check SAP Notes for any known issues related to this error message. Sometimes, SAP provides patches or updates that address specific problems.
  Documentation: Review the application documentation to understand the expected classes and their roles within the application.
  Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.