Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 199
Message text: CoA &1 is already country-specific CoA for participating company codes
According to the mapping table, you want to transfer or restructure the
existing chart of accounts &V1& into &V2&. At the same time, you want to
implement the previous chart of accounts &V1& as a country-specific
chart of accounts without changing it in any way.
During the check, the system found that &V1& is already implemented as
the country-specific chart of accounts for the participating company
codes.
It does not make sense to implement a country-specific chart of accounts
for a country-specific chart of accounts.
Deselect the indicator <ZK>Country</> and initialize the field
<ZK>CtryCoA</> in the view <ZK>Old/new chart of accounts</> of the
activity <ZK>Specify Mapping Values (Chart of Accounts)
</>.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20100199 indicates that the Chart of Accounts (CoA) you are trying to assign is already designated as a country-specific Chart of Accounts for the participating company codes. This typically occurs during data migration or when configuring the system for new company codes.
Cause: Duplicate Assignment: The CoA you are trying to assign to a company code is already linked to another company code as a country-specific CoA. Incorrect Configuration: The system may have been incorrectly configured to allow multiple assignments of the same CoA to different company codes. Data Migration Issues: If you are migrating data from another system, there may be inconsistencies in how CoAs are defined or assigned.
Solution: Check Existing Assignments: Review the existing assignments of the CoA in the system. You can do this by navigating to the configuration settings for the Chart of Accounts and checking which company codes are already assigned to the CoA. Use a Different
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