Message type: E = Error
Message class:  CNV_20200_CHECK - Messages for check functions (company code merge) 
Message number: 217
Message text: Merge into (CoCd &1, CJ business transact. &2) with identical customizing
Merge of cash journals into (Company code &V1&, Cash Journal Number &V2&
) for which the source cash journals have the same customizing and in
addition either no postings exist, or postings exist only in one company
code.
Warning
Check whether you want to merge these cash journal business
transactions. If you do not want to merge them, provide a suitable
mapping for cash journal business transactions.
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.
The SAP error message CNV_20200_CHECK217 typically occurs during a data migration or conversion process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there are multiple entries in the customizing settings that are conflicting, specifically for the combination of Company Code (CoCd) and the CJ (Controlling Area) business transaction.
Cause: The error arises when the system detects that there are multiple customizing entries for the same combination of Company Code and CJ business transaction. This can happen due to: Duplicate Entries: There are duplicate entries in the customizing tables for the specified CoCd and CJ business transaction. Inconsistent Data: The data being migrated or converted has inconsistencies that lead to conflicts in the customizing settings.
Configuration Issues: There may be issues in the configuration of the system that lead to overlapping or conflicting settings.
Solution: To resolve this error, you can follow these steps: Check Customizing Entries: Go to the relevant customizing transaction
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