How To Fix CNV_20100209 - Country-spec. CoA &1 cannot be implemented and converted at the same time

CNV_20100209 - Overview

• Message type: E = Error

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

• Message number: 209

• Message text: Country-spec. CoA &1 cannot be implemented and converted at the same time

What causes this issue?

Chart of accounts &V1& (that will be converted) is a country-specific
chart of accounts for some of the participating company codes, while for
the other participating company codes it is the operative chart of
accounts. This means that country-specific chart of accounts &V3& will
be implemented for those company codes that currently use the chart of
accounts as the operative chart of accounts.
For the other company codes (those which use chart of accounts &V1& as
country-specific chart of accounts), you want to change the
country-specific chart of accounts from &V1& into &V2&, and at the same
time implement country-specific chart of accounts &V3&.

System Response

This is a contradiction. It is not possible to change a country-specific
chart of accounts and at the same time implement a new country-specific
chart of accounts in the same fields.

How to fix this error?

Change the mapping table in one of the following ways:
Include only company codes that use the chart of accounts as the
country-specific chart of accounts
Include only company codes that use the chart of accounts as the
operative chart of accounts
Do not implement the country-specific chart of accounts at all.

Error message extract from SAP system. Copyright SAP SE.

CNV_20100209 - Details

• The SAP error message CNV_20100209 indicates that there is an issue with the implementation and conversion of a country-specific Chart of Accounts (CoA) in the context of a data migration or conversion project. This error typically arises during the use of the SAP S/4HANA Migration Cockpit or similar tools when trying to implement a new CoA while simultaneously converting data from an existing system.
  
  Cause:
  The error occurs because the system does not allow the simultaneous implementation of a new country-specific Chart of Accounts and the conversion of existing financial data. This is often due to the following reasons:
  
  Conflicting Processes: The implementation of a new CoA and the conversion of existing data are two distinct processes that cannot be executed at the same time.
  Data Integrity Issues: The system needs to ensure that the financial data aligns with the new CoA structure, which cannot be guaranteed if both processes are attempted simultaneously.
  Configuration Settings: