How To Fix CNV_PE_IF020 - Parameter &1 exists more than once

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 020

• Message text: Parameter &1 exists more than once

What causes this issue?

The system is trying to find the corresponding transfer method parameter
<ZH>&V1&</> in the transfer list interface. More than one parameter with
the same name was found.
<ZU>Parameter 1</>
<ZH>&V2&-&V1&</>
<ZU>Parameter 2</>
<ZH>&V3&-&V1&</>

System Response

To be able to uniquely identify a transfer method parameter in the
transfer list interface, fields and structures must <ZH>not </>exist
more than once since the identification is made based on name equality.

How to fix this error?

With the current information, it is <ZH>not </>possible to use the
transfer method.
Contact SAP for support.

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 CNV_PE_IF020 - Parameter &1 exists more than once ?

  The SAP error message CNV_PE_IF020 indicates that a parameter (denoted as &1) exists more than once in a specific context, which typically occurs during data migration or conversion processes. This error is part of the SAP Conversion Tools and is often encountered when using the SAP S/4HANA Migration Cockpit or other data migration tools.
  Cause:
  The error is usually caused by:
  
  Duplicate Entries: The parameter in question has been defined multiple times in the configuration or data mapping settings.
  Incorrect Data Mapping: During the data migration process, the mapping of fields may have been set up incorrectly, leading to the same parameter being referenced multiple times.
  Configuration Issues: There may be issues in the configuration of the migration project, such as incorrect settings or parameters being defined in multiple places.
  
  Solution:
  To resolve the CNV_PE_IF020 error, you can take the following steps:
  
  
  Identify the Parameter: Check the error message for the specific parameter name that is causing the issue. This will be indicated in place of &1.
  
  
  Review Configuration: Go through the configuration settings in the migration tool or project. Look for the parameter in question and ensure that it is defined only once.
  
  
  Check Data Mapping: If you are using a mapping template, verify that the parameter is not being mapped multiple times. Adjust the mapping to ensure that each parameter is unique.
  
  
  Remove Duplicates: If you find duplicate entries, remove or consolidate them as necessary. Ensure that the remaining entry is correctly configured.
  
  
  Test the Migration: After making the necessary adjustments, run the migration process again to see if the error persists.
  
  
  Consult Documentation: If the issue continues, refer to the SAP documentation or help resources related to the specific migration tool you are using for additional guidance.
  
  
  Seek Support: If you are unable to resolve the issue, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using, as it may contain useful information regarding common errors and their resolutions.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the CNV_PE_IF020 error effectively.