How To Fix CNV_OR_PE021 - Class &1 does not implement interface &2 (system ID=&3)

CNV_OR_PE021 - Overview

• Message type: E = Error

• Message class: CNV_OR_PE - Messages for remote components

• Message number: 021

• Message text: Class &1 does not implement interface &2 (system ID=&3)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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CNV_OR_PE021 - Details

• The SAP error message CNV_OR_PE021 indicates that a specific class does not implement a required interface. This error typically arises in the context of SAP's data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other tools that rely on object-oriented programming principles.
  
  Cause:
  
  
  Class Implementation Issue: The class specified in the error message (denoted as &1) is expected to implement a certain interface (denoted as &2), but it does not. This could be due to:
  
  The class being incorrectly defined or not fully implemented.
  The interface being newly introduced or modified, and the class not being updated accordingly.
  A missing or incorrect configuration in the system.
  
  
  
  System ID Issue: The error message also includes a system ID (&3), which indicates the specific SAP system where the error occurred. This can help in identifying if the issue is specific to a particular environment.
  
  
  
  Solution:
  
  
  Check Class Implementation:
  
  Go to the ABAP Workbench (transaction SE80) and