Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 626
Message text: Chart of accounts &1 is no target chart of accounts of conversion
The descriptions that you want to convert are always maintained based on
the target data, that is, the information that will be valid after the
conversion.
Example:
You want to do a general chart of account change X -> Y and to merge
accounts a and b into c. If, for example, you want to change the English
description, you must always do this for the target account:
NEW_COA     NEW_ACCT    LNGKEY  SHORTTEXT  LONGTEXT
Y           c           EN      English    English long
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
You specified chart of accounts &V1& as the target chart of accounts.
According to the mapping for old/new chart of accounts, however, &V1&
does <ZH>not</> participate in the conversion (see activity <ZK>Enter
Accounts and Chart of Accounts for Conversion</>).
You can change the descriptions only for accounts and cost elements that
belong to a target chart of accounts of the conversion.
&ADDITIONAL_HINTS&
The descriptions in different languages are actually converted in phase
<ZK>Postprocessing Programs DURING System Lock</>'.
In this phase, all charts of accounts, G/L accounts and cost elements
are already converted. Consequently, the descriptions can only be
maintained based on the target data.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20100626 indicates that there is an issue with the chart of accounts (CoA) during a data conversion process, specifically that the specified chart of accounts (&1) is not recognized as a target chart of accounts for the conversion.
Cause: Incorrect Configuration: The chart of accounts specified in the conversion settings may not be correctly configured as a target chart of accounts in the system. Missing Target Chart of Accounts: The target chart of accounts may not have been created or activated in the system. Mapping Issues: There may be a mapping issue where the source chart of accounts does not align with the target chart of accounts. Data Migration Settings: The settings for the data migration process may not include the specified chart of accounts.
Solution: Check Configuration: Verify that the target chart of accounts is correctly defined in the system. You can do this by navigating to the relevant configuration settings in SAP. Ensure
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