Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 133
Message text: No routines for G/L account and cost element conversion found
You simply want to rename charts of accounts without changing any
accounts or cost elements.
In this case, the system sets the <ZK>Exclude</> indicator for all
routines that convert accounts or cost elements. To identify the
relevant routines, the system uses the information contained in the
table CNV_20100_CFUNC. However this table is empty.
Contact SAP for support.
&ADDITIONAL_HINTS&
If the <ZK>Exclude</> indicator is set for all conversion routines that
are not needed, this may result in considerable performance gains.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20100133 indicates that during a data migration or conversion process, the system could not find any routines for converting General Ledger (G/L) accounts and cost elements. This typically occurs in the context of using the SAP S/4HANA Migration Cockpit or other data migration tools.
Cause: Missing Conversion Routines: The primary cause of this error is that the necessary conversion routines for the specified G/L accounts and cost elements have not been defined or are not available in the system.
Configuration Issues: There may be configuration issues in the migration settings or the mapping of the source and target systems. Data Mapping: The mapping of the G/L accounts and cost elements from the legacy system to the target system may not have been set up correctly. Custom Development: If custom routines were expected to be used for conversion but were not implemented or activated, this could lead to the error.
Solution: Define Conversion Routines:
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