How To Fix CNV_PE_IF004 - Interface for TRule &1 is already existing. New interface not allowed

CNV_PE_IF004 - Overview

• Message type: E = Error

• Message class: CNV_PE_IF - Messages for interface and interface mapping handling

• Message number: 004

• Message text: Interface for TRule &1 is already existing. New interface not allowed

What causes this issue?

Trying to create a new interface for transformation rule <ZH>&V1&</>
with ID <ZH>&V2&</> failed, as an interface for this transformation rule
already exists.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

CNV_PE_IF004 - Details

• The SAP error message CNV_PE_IF004 indicates that there is an attempt to create a new interface for a transformation rule (TRule) that already exists in the system. This typically occurs in the context of data migration or transformation processes, particularly when using SAP's Data Migration tools or Conversion tools.
  
  Cause:
  
  Duplicate Interface: The error arises because the system has detected that an interface for the specified transformation rule already exists. This could happen if:
  The interface was previously created and not deleted.
  There was an attempt to create the same interface again without proper checks.
  There is a misconfiguration or a bug in the migration tool.
  
  
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Interfaces:
  
  Go to the relevant transaction or tool where you are managing transformation rules and interfaces.
  Look for the existing interface associated with the TRule &1 (the specific rule mentioned in the error message).
  If the interface is no longer needed, consider