How To Fix CNV_20100034 - &1 -> &2 cannot have participating company codes; see long text

CNV_20100034 - Overview

• Message type: E = Error

• Message class: CNV_20100 - Messageclass for chart of account conversion

• Message number: 034

• Message text: &1 -> &2 cannot have participating company codes; see long text

What causes this issue?

Copying chart of accounts &V1& into chart of accounts &V1& (same name!)
does not make sense.
However if you merge a chart of accounts into an existing chart of
accounts, you may want the accounts and cost elements from the existing
target chart of accounts to take priority in merges.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

To implement this requirement, proceed as follows:
Create a mapping entry &V1& -> &V2&
Set the <ZK>Copy Rows</> indicator at central chart of accounts level
Set the priority indicator for an account or cost element.
The system then recognizes this scenario as a mere priority scenario.

System Response

If the given scenario is a mere priority scenario and does not involve
any changes within the chart of accounts &V1& itself, it is not allowed
to enter participating company codes.
However the system found that you entered at least the company code &V3&
in the mapping table, which is not allowed.

How to fix this error?

Either change the mapping accordingly or delete the <ZK>Copy Rows</>
indicator at central chart of accounts level from the mapping table.
&ADDITIONAL_HINTS&
Renaming accounts or cost elements is not allowed in a priority
scenario.

Error message extract from SAP system. Copyright SAP SE.

CNV_20100034 - Details

• The SAP error message CNV_20100034 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is an issue with the configuration of company codes in the context of the data being processed.
  
  Cause:
  The error message CNV_20100034 suggests that there is a conflict with the participating company codes in the data being migrated. Specifically, it may occur when:
  
  The data being processed includes company codes that are not compatible with each other.
  The configuration of the company codes does not allow for the specified relationships or transactions.
  There may be inconsistencies in the data that violate the rules set for company code participation.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Company Code Configuration:
  
  Review the configuration of the company codes involved in the migration. Ensure that they are set up correctly and that they can participate in the transactions being